Area and Perimeter

Front

What is the definition of PERIMETER?

Back

The perimeter is the total distance around the outside of a shape.

Front

How do you calculate the PERIMETER of a rectangle?

Back

Add together the lengths of all four sides or use the formula: P = 2(length + width).

Front

What is the definition of AREA?

Back

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

Front

How do you calculate the AREA of a rectangle?

Back

Multiply the length by the width: Area = length × width.

Front

If a rectangle has a length of 10 cm and a width of 5 cm, what is its PERIMETER?

Back

P = 2(10 cm + 5 cm) = 30 cm.

Front

If a rectangle has a length of 8 m and a width of 3 m, what is its AREA?

Back

Area = 8 m × 3 m = 24 square meters.

Front

What units are used to measure PERIMETER?

Back

Perimeter is measured in linear units such as meters, feet, or yards.

Front

What units are used to measure AREA?

Back

Area is measured in square units such as square meters, square feet, or square yards.

Front

If a dragon's enclosure is 12 feet long and 10 feet wide, what is the PERIMETER?

Back

P = 2(12 ft + 10 ft) = 44 ft.

Front

If a dragon's lair has an AREA of 35 square feet and is 7 feet wide, how long is it?

Back

Length = Area ÷ Width = 35 sq ft ÷ 7 ft = 5 ft.