Area and Perimeter Missing sides

Front

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

Back

Perimeter = 2 × (Length + Width)

Front

If a rectangle has a width of 10 meters and a perimeter of 48 meters, how do you find the length?

Back

Subtract the width from half the perimeter: Length = (Perimeter / 2) - Width.

Front

What is the perimeter of a rectangle with a length of 21 feet and a width of 16 feet?

Back

Perimeter = 2 × (21 + 16) = 74 feet.

Front

If the perimeter of a rectangle is 26 units, what is the length if the width is 9 units?

Back

Length = (Perimeter / 2) - Width = (26 / 2) - 9 = 4 units.

Front

What does 'perimeter' mean?

Back

Perimeter is the total distance around the outside of a shape.

Front

What is the width of a rectangle if the length is 15 meters and the perimeter is 60 meters?

Back

Width = (Perimeter / 2) - Length = (60 / 2) - 15 = 15 meters.

Front

How do you find the area of a rectangle?

Back

Area = Length × Width.

Front

What is the area of a rectangle with a length of 5 units and a width of 4 units?

Back

Area = 5 × 4 = 20 square units.

Front

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

Back

Length = Area / Width = 30 / 5 = 6 units.

Front

What is the relationship between area and perimeter?

Back

Area measures the space inside a shape, while perimeter measures the distance around it.