Area and Perimeter

Front

What is the formula for calculating the perimeter of a rectangle?

Back

P = 2l + 2w, where l is the length and w is the width.

Front

If a rectangle has a length of 10 feet and a width of 5 feet, what is its perimeter?

Back

P = 2(10) + 2(5) = 20 + 10 = 30 feet.

Front

What is the formula for calculating the area of a rectangle?

Back

A = l × w, where l is the length and w is the width.

Front

If a rectangle has a length of 6 meters and a width of 4 meters, what is its area?

Back

A = 6 × 4 = 24 square meters.

Front

What is the perimeter of a rectangle that is 12 cm wide and 15 cm long?

Back

P = 2(12) + 2(15) = 24 + 30 = 54 cm.

Front

What is the area of a rectangle with a length of 8 feet and a width of 3 feet?

Back

A = 8 × 3 = 24 square feet.

Front

If the perimeter of a rectangle is 40 meters and the length is 12 meters, what is the width?

Back

P = 2l + 2w; 40 = 2(12) + 2w; 40 = 24 + 2w; 2w = 16; w = 8 meters.

Front

What is the perimeter of a square with a side length of 5 inches?

Back

P = 4s; P = 4(5) = 20 inches.

Front

What is the area of a square with a side length of 4 feet?

Back

A = s × s; A = 4 × 4 = 16 square feet.

Front

If a rectangle has an area of 30 square meters and a width of 5 meters, what is the length?

Back

A = l × w; 30 = l × 5; l = 30 / 5; l = 6 meters.