Saturday

October 25, 2014

October 25, 2014

Posted by **Marisa** on Tuesday, June 15, 2010 at 3:49pm.

4x^2(PI)

My answer 4x^2(pi)=(pi)(r)(2), 16x(pi)=(pi)(r)(2), 16x/pi=5x.

5(PI)

My answer 5(pi)=(pi)(r)(2), sqare root of 5 is 2.23, which rounds to 3, 3(pi)=square root of 9.

What is the area of the sector if the radius is 6 and the degree measure is:

30

My answer 30/360(pi)(6)^2, 0.83(pi)(36),rounds to 1(pi).

50

My answer 50/360[(pi)6^2], 7.1/72[(pi)36], 7.1(36), 255/3.14, =81, square root of 81=9*pi.

90

My answer 90/360[(pi)6^2] 9.49/72[(pi)(36)], 18/9=2*pi.

120

My answer 120/360[(pi)6^2], 4/72[(pi)(36)] 4(36)=144, square root of 144=12*pi.

These are the question and answers that were incorrect on my assignment. I am unsure of what I did incorrect. I would be grateful for assistance. Cheers!

Sincerely,

Marisa

- Geometry -
**Reiny**, Tuesday, June 15, 2010 at 5:28pmfirst one:

πr^2 = 4x^2 π

r^2 = 4x2

r = 2x

if area = 5P

πr^2 = 5π

r^2 = 5

r = √5

sector angle=60°, r = 6

area = (30/360)(π)(36) = 3π

for sector angle=50°

area = (50/36)(36π) = 5π

the rest are the same

**Answer this Question**

**Related Questions**

algebra - Solve the system by addition or substitution. 16x-4y=20 y=4x-4 I ask ...

Algebra - There are two solutions to | 16x - 5 | = 3. The greatest solution is ...

Math - 5(-3x - 2) - (x - 3) = -4(4x + 5) + 13 Answer Multiply factors. -15x - 10...

Math - find any stationary points of the function g(x) = (2x-3)square root of 5+...

calculus - i need to find the derivative using chain rule: (x^2 + 2x - 6)^2 (1-x...

algebra - x^2 +16x+64 x^2+16x=64 (x=3)^2=16x-64 16x=-64 x=-4 Check this problem ...

algebra - Find the radius of a circle with an area of pi(16x^2+24x+9)

math - The question is (2x+1)^2-2(2x^2-1) in simplest form Is this correct? [(2x...

Algerbra - how do you solve 7(3x+4)=8(2x+5)+13 expand the parenthesis...I will ...

Intermediate Algebra - Am I going in the right track? 8x -1/x + 5x - 3/2x = 16x^...