GMAS Area & Perimeter Review

Front

What is Area?

Back

Area is the amount of space inside a shape, measured in square units.

Front

What is Perimeter?

Back

Perimeter is the distance around a shape, calculated by adding the lengths of all its sides.

Front

How do you calculate the area of a rectangle?

Back

Area = length × width.

Front

How do you calculate the perimeter of a rectangle?

Back

Perimeter = 2 × (length + width).

Front

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

Back

Area = 5 in × 5 in = 25 square inches.

Front

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

Back

Perimeter = 4 × 5 in = 20 inches.

Front

Which shape has a larger area: a rectangle with dimensions 4 in by 6 in or a rectangle with dimensions 3 in by 8 in?

Back

The area of the first rectangle is 24 sq in, and the second is 24 sq in. They are equal.

Front

If a shape has a perimeter of 30 inches and is a square, what is the length of one side?

Back

Each side is 30 in ÷ 4 = 7.5 inches.

Front

What is the area of a triangle with a base of 6 inches and a height of 4 inches?

Back

Area = 1/2 × base × height = 1/2 × 6 in × 4 in = 12 square inches.

Front

If a rectangle has an area of 36 square inches and a width of 6 inches, what is the length?

Back

Length = Area ÷ Width = 36 sq in ÷ 6 in = 6 inches.