Answer:
50.24
Step-by-step explanation:
area of a circle =pi r^2
diameter = 2 * radius
radius=8/2=4
area=pi 4^2
=pi 16
=50.26
boo
C
4
In a equilateral triangle, all angles are 60 degree, so 10x+20=60
10x=40
x=4
x = -56
x/7 = -8
Multiply each side by 7
x/7 *7 = -8*7