Question

calculate the area of the circle 10 in round your answer to the nearest hundredth

Answer 1

10in as in 10 inches?

Answer 2

yes

Answer 3

so the circle is 10in round which is the circumference

Answer 4

the equation for circumference is 2*pi*r
so 10 = 2*pi*r

Answer 5

So we need to solve for r
divide both sides by 2pi and we get
10/2pi=r
r = 1.6~ using a calculator

Answer 6

Now we plug r into the area of a circle formula which is pi*r^2

Answer 7

3.14*(1.6)^2= 8

Answer 8

so the area of the circle is 8in

Answer 9

about 8.04 when rounding to the nearest hundredth