The diameter of a semicircle is 6 yards. What is the semicircle's perimeter?

First get the semiperimeter.

Perimeter of the figure = 1/2 Circumference + the diameter.

pi = 3.14

d = 6 yds.

Circumference of the circle of a full circle = pi * d

Circumference full circle = 3.14 * 6

Circumerence full circle = 18.84 yards.

The semi circumference = 1/2 the Circumference.

The semi circumference = 1/2 18.84

The semi circumference = 9.42 yards.

That's not the complete answer.

You must add the diameter to this.

Perimeter = Semi circumference + d

Perimeter = 9.42 + 6

Perimeter = 15.42 meters