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

How do you calculate 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 10 units and a width of 4 units, what is its perimeter?

Back

The perimeter is 28 units, calculated as P = 2(10 + 4) = 28.

Front

If a rectangle has an area of 48 square units and a length of 8 units, what is its width?

Back

The width is 6 units, calculated as width = area / length = 48 / 8.

Front

What is the relationship between the dimensions of a rectangle and its area?

Back

The area of a rectangle is directly proportional to both its length and width; increasing either dimension increases the area.

Front

What is the perimeter of a rectangle with a length of 15 cm and a width of 10 cm?

Back

The perimeter is 50 cm, calculated as P = 2(15 + 10) = 50.

Front

How can you determine which of several rectangles has the greatest area?

Back

To determine which rectangle has the greatest area, calculate the area of each rectangle using A = length × width and compare the results.

Front

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

Back

The perimeter of a square is calculated as P = 4 × side length, so P = 4 × 5 = 20 meters.

Front

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

Back

The width is 8 feet, calculated as width = (perimeter / 2) - length = (40 / 2) - 12.

Front

What is the area of a rectangle with a length of 7 inches and a width of 3 inches?

Back

The area is 21 square inches, calculated as A = 7 × 3 = 21.