Question

What is the area of a circle with a radius of 3?

Answer 1

Do you know the formula for the area of a circle?

Answer 2

I would type s=angle(r) but there's no arc length which is s and no angle given

Answer 3

nope

Answer 4

2pir?

Answer 5

If the radius of a circle is \(\large r\), then the area of the circle is given by \(\large A=\pi r^2\). All you need to do is plug r=3 into the formula and you're done! :-)

Answer 6

oh there it is

Answer 7

9pi

Answer 8

@UsukiDoll what you wrote was the formula for the circumference of a circle.

Answer 9

XD been forever since I"ve last done geometry

Answer 10

or the derivative of pir^2