2006-06-07 11:18:10 · 10 answers · asked by jennifer b 2 in Science & Mathematics ➔ Mathematics
A = pi*r^2
A = pi*7^2
A = 49pi
A = 153.9
2006-06-07 11:20:34 · answer #1 · answered by MsMath 7 · 7⤊ 0⤋
If I were a teacher I would count off points for all the answers given so far.
The formula for the area of a circle is indeed the following:
A = pi * r²
Plugging in a radius (r) of 7 ft. you get.
A = pi * 7²= 49 pi = 153.938040...
Rounding to the nearest tenth you get
A = 153.9
But this number is *meaningless* without the units. The correct units are square feet. So be sure to specify this in your answer.
The area of the circle is:
153.9 *sq. ft.*
2006-06-07 11:36:06 · answer #2 · answered by Puzzling 7 · 0⤊ 0⤋
A = pi * r²
7 * 7 * pi = 49pi = 153.9380400258998686846695257807
So the answer you're looking for is 153.9.
2006-06-07 11:20:08 · answer #3 · answered by Anonymous · 0⤊ 0⤋
A = pi * r²
7 * 7 * pi = 49pi = 153.93804002589986868466952578...
So the answer you're looking for is 153.9.
2006-06-07 12:12:52 · answer #4 · answered by ? 1 · 0⤊ 0⤋
A = pi*r^2
= pi*(7)^2
= pi*49
= 153.9
2006-06-07 11:22:12 · answer #5 · answered by abbbbyboy 2 · 0⤊ 0⤋
A = pi * r^2
A = 7^2 * pi
A = 49pi
A = about 153.94ft^2
2006-06-07 14:55:57 · answer #6 · answered by Sherman81 6 · 0⤊ 0⤋
A = pi * r²
=3.14*7²
=153.86
=153.9ft
2006-06-07 11:24:07 · answer #7 · answered by bri_star_ jones 3 · 0⤊ 0⤋
=pi*r^2
=pi*7^2
=pi*49
=153.9
2006-06-07 11:22:21 · answer #8 · answered by h_alshalchi 2 · 0⤊ 0⤋
Cheat on your homework. Tha'ts a good way to find it.
2006-06-07 11:22:11 · answer #9 · answered by Julie B 3 · 0⤊ 0⤋
153.9
2006-06-07 11:21:50 · answer #10 · answered by Anonymous · 0⤊ 0⤋