9.3 Area of Composite Shapes

Front

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

Back

Area = length × width

Front

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

Back

Area = 1/2 × base × height

Front

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

Back

Area = π × radius²

Front

What is a composite shape?

Back

A composite shape is a shape made up of two or more simple shapes.

Front

How do you find the area of a composite shape?

Back

Calculate the area of each simple shape and then sum them up.

Front

What is the area of a square with a side length of 5 cm?

Back

Area = 5 cm × 5 cm = 25 cm²

Front

What is the area of a rectangle with a length of 8 m and a width of 3 m?

Back

Area = 8 m × 3 m = 24 m²

Front

If a circle has a radius of 4 cm, what is its area?

Back

Area = π × (4 cm)² ≈ 50.27 cm²

Front

What is the area of a triangle with a base of 10 m and a height of 5 m?

Back

Area = 1/2 × 10 m × 5 m = 25 m²

Front

What is the area of a shaded region if the total area is 20 cm² and the unshaded area is 8 cm²?

Back

Shaded area = Total area - Unshaded area = 20 cm² - 8 cm² = 12 cm²