Question

The figure shown in the right is made up of a square and a circle. Find the perimeter of the shaded region.

A. 16+2π cm
B. 12+2π cm
C. 12+4π cm
D. 16+4π cm

Answer 1

Answer: i think B

Explanation:

Answer 2

B. 12 + 2pi cm

Explanation:

The shaded region is made up of 3 square sides and one half circle. The three square sides are each 4, which means that those altogether equal 12.

The circle's circumference can be found by using the equation c = (d)pi

The diameter is 4, so the whole circumference is 4pi. However, you only need half of a circle, which is represented by 2pi.

Add them all together, and you get 12 + 2pi cm.