Question

A circle with circumference of 10 has area of 100.
True or False

Answer 1

Circumference of a circle = \(2\pi r\)
Area of a circle = \(\pi r^{2}\)
so you can solve for \(r\) from the circumference, then solve for the area with the equation to see if it was true or false!

Answer 2

Would it be 78.5?

Answer 3

no. \(r\) of the circle =\(\frac{10}{2\pi}\) and area of the circle = \(\pi (\frac{10}{2\pi})^2=\frac{100}{4\pi}\) so it's not 100!

Answer 4

okay thank you!

Answer 5

no problem!