Area of Basic Shapes Review

Front

What is the formula for the area of a rectangle?

Back

Area = length × width

Front

What is the formula for the area of a square?

Back

Area = side × side or Area = side²

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height

Front

What is the formula for the area of a circle?

Back

Area = π × radius²

Front

How do you find the area of a composite shape?

Back

Divide the shape into basic shapes, find the area of each, and sum them up.

Front

What is the area of a square with a side length of 7 cm?

Back

Area = 7 cm × 7 cm = 49 cm²

Front

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

Back

Area = 10 cm × 5 cm = 50 cm²

Front

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

Back

Area = 1/2 × 8 cm × 5 cm = 20 cm²

Front

What is the area of a circle with a radius of 3 cm? (Use π ≈ 3.14)

Back

Area = π × (3 cm)² ≈ 3.14 × 9 cm² ≈ 28.26 cm²

Front

If the area of a rectangle is 36 cm² and the width is 4 cm, what is the length?

Back

Length = Area ÷ Width = 36 cm² ÷ 4 cm = 9 cm