Question

What is the perimeter of the figure to the nearest tenth of a millimeter?

A.
9.4 millimeters

B.
12 millimeters

C.
21.4 millimeters

D.
30.8 millimeters

Answer 1

The perimeter would be the sum of the side lengths of the figure. Therefore, from the figure the perimeter would be the sum of the rectangle and half of the circle. We calculate as follows:

Perimeter = 2(pi)r / 2 + (2w + 2l)
Perimeter = pi(6/2) + 2(3) + 2(6)
Perimeter = 27.4 mm