Question

the are of a circle with radius R is given by formula a=pieR^2. if circle has area 36 pie sq inches what is the radiusin inches

Answer 1

They are saying \( Area= \pi r^2 \) and \( Area= 36 \pi \) square inches
so you can write down the equation
\( \pi r^2 = 36 \pi \) sq. in
can you solve for r^2 and then r?

Answer 2

my problem is i dont ahve a calculator with the pie symbol tho

Answer 3

would it be like 6 pie?

Answer 4

If you start with
\[ \pi r^2 = 36 \pi \]
what happens if you divide both sides by \( \pi \)?

Answer 5

r^2=36
r=6?

Answer 6

yes

Answer 7

\[ \frac{\cancel{\pi} r^2}{\cancel{\pi}} =\frac{\cancel{\pi} 36}{\cancel{\pi}} \]
\[ r= \pm 6 \]
but r is always positive for a circle
r=6

Answer 8

thank u