Find the radius of a circle whose area equals the area of a rectangle that measures 2 ft. by 11 ft. (Use pi = 22/7)

Question

anonymous · Answer

Area of rectangle = 2 * 11 = 22 square feet
Area of circle = pi * r^2
pi * r^2 = 22
r^2 = (22 * 7)/22 = 7
r=7√

agl202 · Answer

https://answers.yahoo.com/question/index?qid=20100519174450AA131nn @your_mom017 LOL

mven · Answer

lol popular question i guess. thanks

anonymous · Answer

what is that

agl202 · Answer

Where ur answer is from!!! >_> lol

mven · Answer

how about this one?
 A circle has a radius of 8 inches. Find the area of a sector of the circle if the sector has an arc that measures 45°

anonymous · Answer

i didnt get my answer from there im actually in math class right now

mven · Answer

whats with the??????????

agl202 · Answer

I Know right! lol @your_mom017

anonymous · Answer

You should start by converting the angle 45 into radian..
then formula for area is = 0.5*r^2* theta..

theta is the angle here.. you have the radius too given in the question.. so just plug in the values.
The formula for finding the length of the sector:
s=rtheta

For the area of a sector: 
A=(1/2)r2θ

mven · Answer

would that be 8pi?

anonymous · Answer

should be

mven · Answer

awesome thanks. one more
Find the approximate area of a circle with radius equal to 8 ft. (Use  = 3.14)

mven · Answer

200.96?

anonymous · Answer

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