area and perimeter

Front

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

Back

The perimeter (P) of a rectangle is calculated using the formula P = 2(length + width).

Front

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

Back

The perimeter is P = 2(5 cm + 10 cm) = 30 cm.

Front

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

Back

The area (A) of a rectangle is calculated using the formula A = length × width.

Front

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

Back

The area is A = 8 m × 3 m = 24 square meters.

Front

How do you find the length of a rectangle if you know the perimeter and the width?

Back

You can rearrange the perimeter formula: length = (Perimeter/2) - width.

Front

What is the area of a rectangle with a length of 7 cm and a width of 4 cm?

Back

The area is A = 7 cm × 4 cm = 28 square centimeters.

Front

If the perimeter of a rectangle is 50 meters and the width is 10 meters, what is the length?

Back

Length = (50 m / 2) - 10 m = 15 m.

Front

What is the relationship between the perimeter and area of a rectangle?

Back

The perimeter measures the total distance around the rectangle, while the area measures the space contained within it.

Front

If a rectangle has a perimeter of 40 feet and a length of 12 feet, what is the width?

Back

Width = (40 ft / 2) - 12 ft = 8 ft.

Front

What happens to the area of a rectangle if both the length and width are doubled?

Back

The area increases by a factor of four, since Area = length × width.