Asked by Cindy

Find the area of a circle with the given radius or diameter. Round your answer to the nearest tenth.

Diameter = 42.0 mm
Answered by Ms. Sue
A = pi * r^2

A = 3.14 * 21^2

A = 1,384.7 sq. mm
Answered by Damon
radius = 42.0/2 = 21.0
A = pi r^2
= 3.14159 * 21 * 21
round answer to nearest tenth
Answered by Cindy~Never Mind!
Never Mind!

Don't Answer this question!
Answered by Damon
to square 21:
(20+1)(20+1) = 400 + 40 + 1 = 441
Answered by Damon
Oh well :(
Answered by Cindy~Never Mind!
OK, Thanks!

Ms. Sue and Damon!

But I already got the answer!

It was 1,384.7
Answered by Cindy~Never Mind!
You guys are very kind! :)
Answered by Damon
You are welcome :)
be sure you want mm^2, usually that would be converted to cm^2 or m^2
Answered by ....
1.B,C
2.C
3.C
4.B
5.D
6.A
7.A
8.C
Answered by Random KCA Kid
....I know you posted this answer 3 years ago but ima use the answers for the test
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