Question

Kiran bent some wire around a rectangle to make a picture frame. The rectangle is 8 inches by 10 inches.

Find the perimeter of the wire picture frame. Use 3.14 for pi in your calculations.

Answer 1

Answer:

62.8 inches.

Step-by-step explanation:

The wire consists of 14 semicircle + 4 3/4 circles.

The diameter of each circle = 8 / 4 = 2 inches.

Length of a semicircle = 1/2 * pi * diameter and of a 3/4 circle it is 3/4 * pi * diameter.

So the perimeter of the wire

= 14 * 1/2 * 3.14 * 2 + 4 * 3/4 * 3.14 * 2

= 14 * 3.14 + 4 * 3/2 * 3.14

= 62.8  inches.