7th Grade Area Flashcard Corrections

Front

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

Back

Area = length × width.

Front

If a rectangular room measures 32 feet by 24 feet, what is its area?

Back

768 square feet.

Front

What is the cost of carpeting a room that measures 768 square feet if the carpet costs $3 per square foot?

Back

$2,304.

Front

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

Back

Area = π × radius².

Front

What is the area of a circle with a radius of 5 cm?

Back

78.5 square cm.

Front

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

Back

Area = 1/2 × base × height.

Front

If the area of a triangle is 54 square inches and its height is 18 inches, what is the base?

Back

6 inches.

Front

What is the definition of diameter in a circle?

Back

The diameter is the distance across the circle through its center, equal to twice the radius.

Front

If the diameter of a circle is 13 cm, what is the radius?

Back

6.5 cm.

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length.