Area and Perimeter

Front

What is the area of a rectangle?

Back

Area = length × width.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height.

Front

What is the perimeter of a rectangle?

Back

Perimeter = 2 × (length + width).

Front

What is the area of a square?

Back

Area = side × side.

Front

What is the formula for the area of a trapezoid?

Back

Area = 1/2 × (base1 + base2) × height.

Front

If the area of a rectangle is 40 sq ft and the length is 5 ft, what is the width?

Back

Width = Area / Length = 40 / 5 = 8 ft.

Front

What is the perimeter of a square with a side length of 4 cm?

Back

Perimeter = 4 × side = 4 × 4 = 16 cm.

Front

What is the area of a triangle with a base of 10 cm and a height of 5 cm?

Back

Area = 1/2 × 10 × 5 = 25 sq cm.

Front

What is the perimeter of a rectangle with length 6 cm and width 3 cm?

Back

Perimeter = 2 × (6 + 3) = 18 cm.

Front

What is the area of a trapezoid with bases of 8 cm and 5 cm, and a height of 4 cm?

Back

Area = 1/2 × (8 + 5) × 4 = 26 sq cm.