Area and Perimeter Flashcard

Front

What is the formula to calculate the area of a rectangle?

Back

Area = Length × Width

Front

What is the formula to calculate the perimeter of a rectangle?

Back

Perimeter = 2 × (Length + Width)

Front

What is the area of a rectangle with a length of 8 cm and a width of 5 cm?

Back

40 cm²

Front

If the area of a rectangular billboard is 128 square feet and its width is 8 feet, what is the length?

Back

Length = Area ÷ Width = 128 ft² ÷ 8 ft = 16 ft

Front

A rectangle has a perimeter of 24 cm. If the length is 8 cm, what is the width?

Back

Width = (Perimeter ÷ 2) - Length = (24 cm ÷ 2) - 8 cm = 4 cm

Front

What is the area of a rectangular garden that measures 30 meters by 15 meters?

Back

450 square meters

Front

What is the perimeter of a rectangular garden with a length of 85 meters and a width of 42 meters?

Back

254 meters

Front

What is the area of a rectangle with a length of 10 cm and a width of 4 cm?

Back

40 cm²

Front

If a rectangle has a length of 12 cm and a width of 3 cm, what is its perimeter?

Back

30 cm

Front

What is the area of a rectangle with a length of 7 m and a width of 2 m?

Back

14 m²