# geometry

12. Find the volume of the cylinder in terms of pi. The diagrams are not drawn to scale. h=8 in. and r=4 in.

~256 pi in.3
~128 pi in.3 *****
~64 pi in.3
~32 pi in.3

14. What is the volume of the composite space figure to the nearest whole number? The figure is not drawn to scale. 3cm,8cm,2cm,5cm,6cm

~210 cm3
~180 cm3
~120 cm3
~60 cm3 *****

17. A rectangular pyramid fits exactly on top of a rectangular prism. The prism has a length of 15 cm, a width of 5cm, and a height of 7cm. The pyramid has a height of 13cm. Find the volume of the composite space figure.

~1,500 cm3
~500 cm3
~975 cm3 *****
~850 cm3

~3,600 pi m2 *****
~7,200 pi m2
~10,800 pi m2
~14,400 pi m2

19.A spherical balloon has a circumference of 19cm. What is the approximate surface area of the balloon to the nearest sqaure centimeter?

~115 cm2
~460 cm2 ****
~361 cm2
~1,134 cm2

20. What is the volume of the sphere? Round the answer to the nearest cubic unit. 16cm

~268 cm3
~2,145 cm3
~17,157 cm3
~536 cm3 *******

21. The volume of a sphere is 3,000 pi m3. What is the surface area of the sphere to the nearest square meter?

~688 m2
~1,079 m2 ******
~2,158 m2
~3,167 m2

24. What is the scale factor of a cube with volume 343 ft.3 to a cube with volume 2,744 ft.3?

~49:196 ****
~1:2
~2:1
~1:8

28. Concrete can be purchased by the cubic yard. How much will it cost to pour a slab 15 feet by 15 feet by 3 inches for a patio if the concrete costs \$46.00 per cubic yard?

~\$431.25
~\$2587.50
~\$95.83 ******
~\$2875.50

30. What is the volume of a square pyramid with base edges of 40 cm and a slant height of 25 cm?

~533.3 cm3 *****
~8,000 cm3
~12,000 cm3
~24,000 cm3

31. What is the slant height of the cone to the nearest whole number? The figure is not drawn to scale. 17m, 9m

~2,304 cm3
~4,608 cm3
~6,912 cm3
~13,824 cm3 ******

32. What is the maximum volume of a square pyramid that can fit inside a cube with a side length of 24 cm?

~2,304 cm3 ******
~4,608 cm3
~6,912 cm3
~13,824 cm3

need someone to check my answers and to help me if they are wrong

1. 👍
2. 👎
3. 👁
1. 12. correct
14. can't tell what shape you have
17. NO
18. correct, if I assume you are finding area. Did not say
19. NO
either case.
21. NO
24. NO, the ratio of sides of similar solids equals the ration of the cube root of their volumes
25. correct
30. NO
31. no figure, can't tell
32. NO

Wow, looks like some serious study ahead and learning
the formulas.

1. 👍
2. 👎

## Similar Questions

1. ### Algebra

If the surface area of a cylinder is equal to the value of the volume of the cylinder. Find the value of x. X is the height which is unknown. The radius is 6ft

2. ### Physics, Desperate Need of help!

Gold, has a mass of 19.32g for wach cubic centimeter of volume, is most ductile metal and can be pressed into a thin leaf or drawn out into long fiber. -If a sample of gold, with a mass of 27.63g is pressed into a leaf of

3. ### calculus

A cylinder is generated by rotating a rectangle with perimeter 12 in. about one of its sides.? Express the volume of the cylinder as a function of x. Find the approximate value of x that maximizes the volume. Then give the

4. ### Chemistry

the mass of cylinder one is 1.35 times the mass of cylinder two, and the volume of cylinder one is 0.792 times the volume of cylinder two. If the density of cylinder one is 2.70 g/cm3 what is the density of cylinder two? THIS

1. ### physics

A string is wrapped around a uniform solid cylinder of radius r. The cylinder can rotate freely about its axis. The loose end of the string is attached to a block. The block and cylinder each have mass m. Note that the positive y

2. ### Pre-calc/trig

Find a function that models surface area of a cylinder in terms of its height . The volume of a cylinder is 300 cm^3 . I know the volume of a cylinder is v= 3.14•r^2•h and Surface area is 2•3.14•r^2+2 •3.14•r•h. I

3. ### math

The height of a cylinder is three times its radius. Find a function that models the volume V of the cylinder in terms of its radius r.

4. ### Algebra

This diagram shows a solid metal cylinder. The cylinder hasbase radius 2x and height 9x. The cylinder is melted down and made into a sphere of radius r Find an expression for in terms of x

1. ### Physics

An infinitely long, solid insulating cylinder with radius a has positive charge uniformly distributed throughout it with a constant charge per unit volume p. a) using Gauss's law, derive the expression for the electric field

2. ### ALGEBRA

how to do this find the volume of a cylinder if the radius is 8 inches and the height is 10in (ANSWER MAY BE LEFT IN TERMS OF PIE)

3. ### math

i need help with geometry semester b unit 7 lesson 10 surface area and volume unit test i need someone to check my anwsers and to tell what i did wrong 1) use euler's formula to find the missing number vertices 15 edges 24 faces?

4. ### College Chemistry

If the density of cylinder 1 is 3.55 , what is the density of cylinder 2? (The masses and volumes of two cylinders are measured. The mass of cylinder 1 is 1.35 times the mass of cylinder 2. The volume of cylinder 1 is 0.792 times