Question

If the area of a circle is twice the area of a triangle whose base is 4 pi and whose altitude is 4, the radius of the circle equals

a. square root 32
b. 2
c. 4
d. 8
e. 32

please answer and explain

Answer 1

√(2* 1/2 * 4pi * 4/pi) = 2√2 = 4

Answer 2

oops. 2√2 left over from when I only did 1 times the area of the triangle. Ignore it.