Question

What is the approximate perimeter of the figure? Use 3.14 for pi.

Answer 1

Remember the first couple of digits in pi (this is helping but it’s very important) 3.14158

Answer 2

34,28 ft

Explanation:

This figure is formed from a rectangle and a semi-circle

Opposite sides of a rectangle are equal

This figure's perimeter is the sum of all side lengths:

2 sides of 12 ft

1 side of 4 ft

Half of the circumference

d (diameter) = 4 ft

r (radius) = 0,5 × 4 = 2 ft

First, we have to find the half of the circumference (C):

`0.5c = (2\pi * r`)/2

`0.5c = (2 * 3.14 * 2)/2 = 6,28`

Now, we can find the perimeter of the given figure:

P = 6,28 + 12 + 12 + 4 = 34,28 ft