Answer:
7/25
Step-by-step explanation:
$80
x-55 =25
x=80
2x+78=5x+15
78-15=5x-2x
3x=63
x=21
General formula for the area of a circle = πr^2.
Since the diameter is 8, the radius is 4 (half of diameter)
So the area is π(4)^2 = 16π.
