Question

A classroom is rectangular in shape. If listed as ordered pairs, the corners of the classroom are (−12, 15), (−12, −9), (9, 15), and (9, −9). What is the perimeter of the classroom in feet?

45 feet

90 feet

252 feet

504 feet

Answer 1

Check the picture below.

Answer 2

The perimeter of a rectangle is the total length of all the sides of the rectangle added together. To find the perimeter of a rectangle, we can use the following formula:

Perimeter = 2(length + width)

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In this case, the length of the rectangle is 21 feet and the width is 24 feet. Therefore, the perimeter of the classroom is:

Perimeter = 2(21 + 24) = 90 feet

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So the answer is 90