RHL School

Mathematics Problem Solving
Volume 5, Number 31, May 22, 2000

Perimeter and Area

1. You have a square piece of cardboard that has a perimeter of 12 centimeters. What is the area of the cardboard?

a. 144 square centimeters
b. 9 square centimeters
c. 16 square centimeters
d. 24 square centimeters

2. Samantha owns a ranch that covers 48 square miles. She will plant wheat on all the land except for 16 square miles. Samantha will plant wheat on __________ square miles of land.

a. 64
b. 32
c. 4
d. 768

3. A rectangle is 5 inches wide. The area of the rectangle is 35 square inches. What is the perimeter of the rectangle?

a. 24 inches
b. 40 inches
c. 30 inches
d. There is not enough information to know.

4. John’s bedroom is exactly 18 feet by 21 feet. He wants to get carpeting to cover the entire floor. How many square yards of carpeting does he need?

a. 126
b. 378
c. 13
d. 42


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