Question

The perimeter of a semicircle is 10. 28 miles. What is the semicircle's diameter?

Use 3. 14 for ​

Answer 1

With these kind of questions you need to find the semi circle diameter
D = 2x radius

Answer 2

Answer is in attached photo.

Explanation:

Solution

The solution is in the attached photo, do take note the diameter of a circle or a semicircle is:

d = 2 x radius