Area of Squares, Rectangles, Triangles & Circles

Front

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

Back

A = l • w, where A is the area, l is the length, and w is the width.

Front

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

Back

A = 1/2 • b • h, where A is the area, b is the base, and h is the height.

Front

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

Back

A = π • r², where A is the area and r is the radius.

Front

How do you calculate the area of a square?

Back

A = s², where A is the area and s is the length of a side.

Front

If a rectangle has a length of 10 feet and a width of 5 feet, what is its area?

Back

A = 10 • 5 = 50 square feet.

Front

What is the area of a triangle with a base of 8 feet and a height of 5 feet?

Back

A = 1/2 • 8 • 5 = 20 square feet.

Front

How much paint is needed to cover a wall that is 20 feet long and 12 feet high?

Back

Area = 20 • 12 = 240 square feet.

Front

If the radius of a circle is 7 feet, what is its area using π = 3.14?

Back

A = 3.14 • 7² = 153.86 square feet.

Front

What is the area of a square with a side length of 6 meters?

Back

A = 6² = 36 square meters.

Front

How do you convert square feet to square meters?

Back

1 square foot = 0.092903 square meters.