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April 18, 2014

April 18, 2014

**Recent Homework Questions About Geometry**

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**Geometry**

Two similar pyramids have laterl area 8ft^2 and 18ft^2. The volume of the smaller pyramid is 32ft^3. Find the volume of the larger pyramid.
*Sunday, September 29, 2013 at 11:31pm*

**Geometry**

A regular pentagonal solid prism has 9cm base edges. A larger, similar solid prism of the same material has 36cm base edges. How does each indicated measurement for the larger prism compare to the same measurement for the smaller prism? Find the volume and weight.
*Sunday, September 29, 2013 at 11:29pm*

**Geometry**

Which is the best approximation of the volume of the ball of string? A. 300ft^3 B. 600ft^3 C. 1,200ft^3 D. 2,400ft^3
*Sunday, September 29, 2013 at 11:24pm*

**Geometry**

what is the radius of the ball of string to the nearest tenth of a foot? A. 3.3 B. 6.6 C. 13.2 D. 20.75
*Sunday, September 29, 2013 at 11:22pm*

**Geometry**

find the radius of a sphere withh the given property. A.The number of square meters of a surface area equals the number of cubic meters of volume. B. The ratio of surface area in square meters to volume in cubic meters is 1:5.
*Sunday, September 29, 2013 at 11:17pm*

**Geometry**

sure. I'm pretty strong!
*Sunday, September 29, 2013 at 11:14pm*

**Geometry**

The density of steel is about 0.28Ib/in^3. could you lift a solid steel ball with radius 4in? whith radius 6in? explain
*Sunday, September 29, 2013 at 11:13pm*

**Algebra HELP!!**

Let a = Angle A a + 2a = 90 3a = 90 a = 30 http://www.mathsisfun.com/geometry/complementary-angles.html
*Sunday, September 29, 2013 at 6:50pm*

**algebra**

Must feel good to feel like seventh grade again. I do not envy you tainkg Algebra although I remember it with more fondness than Geometry which just about did me in.Maria
*Sunday, September 29, 2013 at 2:11pm*

**geometry**

If MSS is a median it bisects NQ and NS = QS 2a + 1 = 3a-14 -a = -15 a = 15 I will assume your measure of angle MSQ is in degrees, so angle MSQ = 7(15) + 1 = 106° If MS would be an altitude, angle MSQ would have to be 90° Since it it not, ........
*Sunday, September 29, 2013 at 12:34pm*

**geometry**

if line MS is a median of triangle MNQ. Line QS equals 3a-14, line SN equals 2a + 1, and the measurment of angle MSQ equals 7a+1, find the value of a. Is line MS also an altitude of triangle MNQ?
*Sunday, September 29, 2013 at 10:17am*

**geometry**

1) A billboard on level ground is supported by a brace, as shown in the accompanying diagram. The measure of angle A is 15 degrees is greater than twice the measure of Angle B. Determine the measure of Angle A and the measure of angle B.
*Saturday, September 28, 2013 at 9:03pm*

**Geometry**

4/3 pi r^3 = pi r^2 h h = 4/3 r
*Friday, September 27, 2013 at 3:27pm*

**Geometry**

4/3 pi (5.6/2)^3 in^3 * 0.018 lb/in^3 = ? lbs the nonsense about "normal" density of ice is just noise.
*Friday, September 27, 2013 at 3:26pm*

**Geometry**

yes, unless exactly on it. But then, since you give no information about the sphere, I guess it doesn't really matter.
*Friday, September 27, 2013 at 3:25pm*

**Geometry**

Give the dimensions of a cylinder and a sphere that have the same volume.
*Friday, September 27, 2013 at 3:21pm*

**Geometry**

On September 3, 1970 a hailstone with diameter 5.6in fell at Coffeyville, Kansas. It weighed about 0.018Ib/in^3 compared to the normal 0.033Ib/in^3 for ice. About how heavy was this Kansas hailstone?
*Friday, September 27, 2013 at 3:18pm*

**Geometry**

tell whether each of the following points is inside, outside, or on the sphere. A(o, -3,4)B(-1,-1)C(4,-6,-10).
*Friday, September 27, 2013 at 3:10pm*

**Geometry**

I like to eat pie, but calculate with pi. v = 4/3 pi r^3 a = 4 pi r^2 so, plug in r=3 and chug away.
*Friday, September 27, 2013 at 3:07pm*

**Geometry**

use pie(3.14) to estimate the surface area and volume of a sphere with radius 3cm.
*Friday, September 27, 2013 at 3:05pm*

**Geometry**

Thanks so much!
*Friday, September 27, 2013 at 12:27am*

**Geometry**

x>4 4>0 so, x>0 sounds like you need to review what transitivity means. Also, even without knowing anything about properties, you should know that if you look at the number line, since x is to the right of 4, it is also to the right of 0, since 4 is to the right of 0...
*Friday, September 27, 2013 at 12:18am*

**Geometry**

sounds like it involves the fact that vertical angles are equal.
*Friday, September 27, 2013 at 12:16am*

**Geometry**

So, I am wondering if the statement is true or false.
*Friday, September 27, 2013 at 12:06am*

**Geometry**

since > is transitive, and 4>0, x>4 => x>0
*Friday, September 27, 2013 at 12:03am*

**Geometry**

True or False: If x>4, then x>0 ? If false please explain.
*Thursday, September 26, 2013 at 11:57pm*

**geometry**

what is a concave polygon using the classify and differentiate method
*Thursday, September 26, 2013 at 10:59pm*

**Geometry**

If line AB is perpendicular to line EF, and line CD is perpendicular to EF, then the measure of angle 1=the measure of angle 2. Give an arguement for the statement and a reason for each step. There is also a diagram drawn on my homework which is a vertical line with two ...
*Thursday, September 26, 2013 at 8:25pm*

**Geometry**

Let h be the height of the statue which lies above the woman's height of 5 ft h/15 = tan60° h = 15tan60 = 15√3 so the height of the statue is 15√3 + 5
*Thursday, September 26, 2013 at 12:00am*

**Geometry**

Just set it up like a right triangle problem. In fact this problem is a special triangle problem dealing with 30,60,90 degree triangles. I recommend drawing a picture with these dimensions: *Your x leg is 15ft *y leg is the height of the statue (what you want to find), for now...
*Wednesday, September 25, 2013 at 10:38pm*

**Geometry**

A 5 foot tall woman stands 15ft from a statue. She must look up at an angle of 60 degrees to see the top of the statue. How tall is the statue?
*Wednesday, September 25, 2013 at 10:18pm*

**geometry**

time walking + time allowance to be early = 12 min + 15 min = 27 minutes time he should leave = 8:10 am - 0:27 = 7:43 am check by adding 27 minutes to 8:10
*Wednesday, September 25, 2013 at 9:27pm*

**geometry**

hai takes 12 minutes to walk to school. he wants to get there 15 minutes early to meet with his lab partner. what time should he leave his house if school starts at 8:10am?
*Wednesday, September 25, 2013 at 8:28pm*

**Geometry**

and can you not solve the equation I gave? I assume you have had Algebra I.
*Wednesday, September 25, 2013 at 5:02pm*

**Geometry**

@steve it is asking what is x
*Wednesday, September 25, 2013 at 12:36pm*

**Geometry**

@steve it is asking what is x
*Wednesday, September 25, 2013 at 12:34pm*

**Geometry**

well, you have 5x+11 = 10x-4 other than that, no clue what the question is. I think it's "what is x?"
*Wednesday, September 25, 2013 at 12:26pm*

**Geometry**

If BC bisects angle ABD, and angle abc=5x+11 angle CBD=10x-4 a.5 b.3 c.1 d.2
*Wednesday, September 25, 2013 at 12:03pm*

**Geometry**

When it is rotated about its diameter, the shape formed is a sphere. :)
*Wednesday, September 25, 2013 at 10:45am*

**Geometry**

do it the same way I just showed you for the pentagon
*Tuesday, September 24, 2013 at 10:41pm*

**Geometry**

from the centre I can draw 5 identical triangles the central angle of each is 360/5 or 72° the area of one of these = (1/2)(5)(5)sin72 = 11.8882... so 5 of them or the pentagon has an area of appr 59.44 in^2
*Tuesday, September 24, 2013 at 10:40pm*

**Geometry**

You have given only 2 sides of the base triangle, unless it is right-angled. But you did not say that, and I assume h is the height. find the area of the base, then multiply that by 1.5
*Tuesday, September 24, 2013 at 10:12pm*

**Geometry**

find the area of a hexagon with radius 6.2m.
*Tuesday, September 24, 2013 at 10:08pm*

**Geometry**

find the area of a regular pentagon with radius 5in
*Tuesday, September 24, 2013 at 10:07pm*

**Geometry**

Just remember to take the area of the bottom of the cylinder and then multiply it by the height of the cylinder. This is the formula for the volume of the cylinder: V=π(r^2)h Just substitute the info given into this equation. r= 1.2 cm h= 5.3 cm so V= π(1.2^2)(5.3) ...
*Tuesday, September 24, 2013 at 9:57pm*

**Geometry**

I would just add up the two vectors (289cos106°, 289sin106°) + (32cos180, 32sin180) = (-79.659 , 277.805) + (-32 , 0) = (-109.659 , 277.805) magnitude = √(109.659^2 + 277.805^2) = 298.665 mph direction ? tanØ = 277.805/-109659 Ø = 111.54° which ...
*Tuesday, September 24, 2013 at 9:57pm*

**Geometry**

what about it ?
*Tuesday, September 24, 2013 at 9:47pm*

**Geometry**

construct a right angled triangle, let one non-90° angles be x, then the other is 90-x recall sinx = opposite/hypotenuse and cosx = adjacent /hypotenuse but when we look at the angles x and 90-x, the opposite of one becomes the adjacent of the other So it should be very ...
*Tuesday, September 24, 2013 at 9:47pm*

**Geometry**

find the volume of a triangular prisim with a=2.3, c=2 and h=1.5
*Tuesday, September 24, 2013 at 9:46pm*

**Geometry**

what shape does a semi circle form when rotated?
*Tuesday, September 24, 2013 at 9:42pm*

**Geometry**

what shape does a square form when rotated?
*Tuesday, September 24, 2013 at 9:42pm*

**Geometry**

what is the volume of a cylinder with a radius of 1.2 and height of 5.3cm
*Tuesday, September 24, 2013 at 9:41pm*

**Geometry**

A plane flying 16 degrees west of north at 289mph is flying in air which is moving 32mph at due west. Find the resulting speed and direction of the plane. (Step by step please!)
*Tuesday, September 24, 2013 at 9:34pm*

**Geometry**

A regular hexagon with radius 6.2m.
*Tuesday, September 24, 2013 at 9:32pm*

**Geometry**

A regular pentagon with radius 5inches.
*Tuesday, September 24, 2013 at 9:30pm*

**Geometry**

Explain why sinx degrees= cos(90-x)degrees. include a diagram with your explanation.
*Tuesday, September 24, 2013 at 9:29pm*

**Geometry**

4.5/3 = 1.5 6.75/4.5 = 1.5 the ratio between terms appears to be a constant 1.5
*Tuesday, September 24, 2013 at 8:42pm*

**Geometry**

these numbers are all primes. Using that pattern, the sequence continues with 13,17,23,29,... Or, you could say that the numbers differ by 1,2,2,4,... So, the pattern of differences could be 1 1, 2 2's, 4 4's, 6 6's, ... and the sequence would continue 15,19,23,29,...
*Tuesday, September 24, 2013 at 8:40pm*

**Geometry**

not if two are parallel or all 3 are parallel.
*Tuesday, September 24, 2013 at 8:36pm*

**Geometry**

Three coplanar lines always make a triangle? Find a counter example.
*Tuesday, September 24, 2013 at 5:42pm*

**Geometry**

2,3,5,7,11... What is the inductive reasoning?
*Tuesday, September 24, 2013 at 5:25pm*

**Geometry**

3,4.5,6.75,10.125... what is the inductive reasoning?
*Tuesday, September 24, 2013 at 5:25pm*

**Geometry **

2,3,5,7,11.... What is this inductive reasoning?
*Tuesday, September 24, 2013 at 5:22pm*

**Geometry **

2,3,5,7,11.... What is this inductive reasoning?
*Tuesday, September 24, 2013 at 5:17pm*

**Geometry**

3,4.5,6.75,10.125... what is the inductive reasoning?
*Tuesday, September 24, 2013 at 5:16pm*

**geometry**

10 and 2 - 3
*Monday, September 23, 2013 at 11:40pm*

**geometry**

360 deg /24 hrs = 15 deg/hr
*Monday, September 23, 2013 at 8:33pm*

**geometry**

Earth completes one full rotation each day, making the Sun appear to rise and set. If the Sun passes directly overhead, by how many degrees does its position in the sky change every hour?
*Monday, September 23, 2013 at 8:25pm*

**geometry**

For 1 through 10, what is the area and volume of the given shape, if the length of one side of the base is 6, the height is 8, and the slant height is 10? (Not all shapes will require all three numbers.) The shape is a right prism with: 1. an equilateral triangle as the base
*Monday, September 23, 2013 at 4:25pm*

**Geometry**

well, since ABD = BDC, that would make it 4x+13. If you really want a number, just solve for x: 9x = 2(4x+13)
*Monday, September 23, 2013 at 1:03pm*

**Geometry **

Line BD bisects angle ABC. Angle ABC= 9x. Angle ABD= 4x+13. Finds angle DBC
*Monday, September 23, 2013 at 12:47pm*

**geometry**

dsds
*Monday, September 23, 2013 at 12:04pm*

**geometry**

dsds
*Monday, September 23, 2013 at 12:04pm*

**geometry**

dsds
*Monday, September 23, 2013 at 12:04pm*

**Geometry**

Explain why the statements LR = RL and <CBA = <ABC are both true by the Reflexive property of Congruence.
*Sunday, September 22, 2013 at 3:07pm*

**math/geometry**

A football isnt a sphere
*Sunday, September 22, 2013 at 9:39am*

**geometry**

The question defined what complementary angles are, but did not say that a and b are complementary. The question has a solution if a and b are complementary, and will be assumed as follows. if a and b are complementary, then a+b=90 angle a is 21 degrees more than twice angle b...
*Saturday, September 21, 2013 at 8:26pm*

**geometry**

two angles, a and b are complementary if the sum of their measure is 90 degrees. If angle a is 21 degrees more than twice angle b find the measures of angles a and b. I would like to know how to set this equation up in order to find the answer.
*Saturday, September 21, 2013 at 7:52pm*

**Math-Geometry**

I am going out on a limb here and will assume that ABC is a triangle and O is any point inside it, then the 3 angles must add up to 360° so simply solve for x x+3 + 2x+11 + 4x-7 = 360 I got x = 353/7 , was expecting it come out "nicer"
*Saturday, September 21, 2013 at 7:22pm*

**Math-Geometry**

Angle AOB=x+3, Angle AOC=2x+11, Angle BOC=4x-7. Solve for x.
*Saturday, September 21, 2013 at 7:11pm*

**Geometry**

Angle of depression is the angle below the horizontal that an observer must look in order to see an object below him. If you draw the figure, you can actually see that the hot-air balloon is located 25° above the horizontal. We actually formed a triangle here, with height ...
*Friday, September 20, 2013 at 11:57pm*

**Geometry**

Note that we can form a right triangle here, with base equal to 100 ft and angle between hypotenuse and base equal to 48°. Let h = height of triangle, which is also equal to total height of statue minus the 5 ft elevation of the device. Thus, tan 48° = h / 100 h = 100...
*Friday, September 20, 2013 at 11:48pm*

**Geometry**

It's easier if you drew the figure, but it's hard to draw figures here so I'll just describe it. :3 Note that the woman is 15 ft from the statue, and she looks up at an angle of 60° in order to see the top of statue. From here we can actually form a right ...
*Friday, September 20, 2013 at 11:43pm*

**Geometry**

To get the distance, use the distance formula: d = sqrt((x2 - x1)^2 + (y2 - y1)^2) Assuming the point where the home lies is at the origin (0,0), thus the beach lies at (120, -30). Substituting, d = sqrt((120 - 0)^2 + (-30 - 0)^2) d = sqrt(14400 + 900) d = sqrt(15300) d = 123....
*Friday, September 20, 2013 at 10:28pm*

**Geometry**

A surveyor measuring the tallest tree in a park is 100ft from the tree. His angle-measuring device is 5 ft above the ground. The angle of elevation to the top of the tree is 48°. How tall is the tree?
*Friday, September 20, 2013 at 9:55pm*

**Geometry**

A family vacationed at a beach 120 mi east and 30 mi south of their home. Find the distance and the direction from their home to the beach.
*Friday, September 20, 2013 at 9:54pm*

**Geometry**

Twenty minutes after being launched, a hot-air balloon has risen to an altitude of 300 m. The pilot can still see the starting point on the ground at a 25° angle of depression. How many meters is the balloon from the starting point?
*Friday, September 20, 2013 at 9:54pm*

**Geometry**

A 5 foot tall woman stands 15 ft from a statue. She must look up at an angle of 60° to see the top of the statue. How tall is the statue?
*Friday, September 20, 2013 at 9:53pm*

**Geometry**

360/8 = ? why 360?
*Friday, September 20, 2013 at 7:15pm*

**Geometry**

Four lines intersect at point P, forming 8 angles at the point. What is the average angle measure of the 8 angles?
*Friday, September 20, 2013 at 7:15pm*

**Geometry**

Radius of R = r units. Radius of Q = (4/5)*r = 4r/5 units. Ar/Aq = pi*r^2/pi*(4r/5)^2 Ar/Aq = r^2/(4r/5)^2 = r^2/(16r^2/25) Ar/Aq = r^2*25/16r^2 25/16 = 25/16 = 1.5625 = 156.25% Ar = 156.25% - 100% = 56.25% > Aq.
*Friday, September 20, 2013 at 7:10pm*

**Geometry**

xy = s^2-9 = (s-3)(s+3) Looks like the rectangle has short side x=s-3, so s = x+3 p(rect) = 2(s-3)+ 2(s+3) = 4s = p(square) there are lots of solutions 3x9 : 6x6 17x23 : 20x20 ...
*Friday, September 20, 2013 at 7:01pm*

**Geometry**

A rectangle has the same perimeter as a square. If the area of the rectangle is 9 less than the area of the square, the side length of the square is how much longer than the shorter side of the rectangle ?
*Friday, September 20, 2013 at 6:50pm*

**Math (Geometry)**

Let the angle between the 2 given sides by Ø then (1/2)(5)(10)sinØ = 18 sinØ = 18/25 by Pythagoras: cosØ = √301/25 let the third side be x by the Cosine Law x^2 = 5^2 + 10^2 - 2(5)(10)cosØ = 125 - 100(√301/25) = 55.60259... x = ...
*Friday, September 20, 2013 at 6:25pm*

**Geometry**

sum of interior angles of a pentagon = 180(5-2) = 540 one is 48, so the remaining 4 have a sum of 492 average of remaining 4 angles = 492/4 = 123°
*Friday, September 20, 2013 at 6:14pm*

**Geometry**

side of first square ---- x side of 2nd square ----- y (4x + 4y)/2 = 36 x+y = 18 --- y = 18-x (x^2 + y^2)/2 = 90 x^2 + y^2 = 180 x^2 + (18-x)^2 = 180 x^2 + 324 - 36x + x^2 = 180 x^2 - 18x + 72 = 0 (x - 12)(x - 6) = 0 x=12 or x=6 if x=12, then y = 6 if x = 6 , then y = 12 we ...
*Friday, September 20, 2013 at 6:07pm*

**Geometry**

Two squares have an average perimeter of 36 and an average area of 90. What is the side length of the larger square?
*Friday, September 20, 2013 at 4:57pm*

**Geometry**

If one of the interior angles of a pentagon has a measure of 48 degrees, what is the average measure of the pentagon's other interior angles ?
*Friday, September 20, 2013 at 4:42pm*

**Math (Geometry)**

Find the length of the third side of a triangle if the area of the triangle is 18 and two of its sides have lengths of 5 and 10.
*Friday, September 20, 2013 at 4:01pm*

**geometry**

sdfstesw3w64wedy
*Thursday, September 19, 2013 at 8:10pm*

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