Question

Renee is participating in a fundraiser based on how far she walks around the square field at her elementary school. The field is 0.25 squaremiles. If she earns $5.50 for each mile she walks, how much was she earned after walking around the field twice?

Answer 1

She earned $22 after walking around the field twice.

Explanation:

In each lap, the number of miles that she will walk is the perimeter of the field. The field, is a square, so we have to take a look at square concepts to solve the question.

Square concepts:

The area of a square of side l is given by: A = l²

The perimeter of a square of side l is given by: P = 4l

The field is 0.25 square miles.

This is the area. So

A = l²

l² = 0.25

l = sqrt(0.25)

l = 0.5

The perimeter will be:

P = 4*0.5 = 2 miles

How much was she earned after walking around the field twice?​

1 lap is 2 miles. Twice is 2 laps, so 2*2 = 4 miles.

$5.50 for each mile.

4*$5.50 = $22

She earned $22 after walking around the field twice.