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
C) 4
The area of the circle is twice the area of the triangle. Fina the area of the triangle and multiply it by two.
1/2(3.14*4)(4)= 25.12
25.12*2= 50.24
50.24 is the area of the circle so..
50.24= pi(radius^2)
50.24/3.14= 16
The square root of 16= 4