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
2 answers
√(2* 1/2 * 4pi * 4/pi) = 2√2 = 4
oops. 2√2 left over from when I only did 1 times the area of the triangle. Ignore it.
1 answer