In the figure right, each of the circles has radius 4 and the area enclosed by both circles is 28π. What is the area of the shaded region?

In the figure right, each of the circles has radius 4 and the area enclosed by both circles is 28π. What is the area of the shaded region?

A 0

B 2π

C 4π

D 4π2

Solution

Correct Answer: Option C

r=4

area =πr2= π42=16π

দুটি বৃত্তের মোট area = 16π+16π =32 π

Shaded region= 32 π-28π =4π