Area of Composite Figures

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 circle?

Back

Area = π × radius².

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 trapezoid?

Back

Area = 1/2 × (base1 + base2) × height.

Front

How do you find the total area of a composite figure?

Back

Add the areas of all individual shapes that make up the composite figure.

Front

If the area of a rectangle is 70 cm² and the area of a circle is 12.56 cm², what is the area of the shaded region?

Back

Area of shaded region = Area of rectangle - Area of circle = 70 cm² - 12.56 cm² = 57.44 cm².

Front

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

Back

Area = side × side = 5 × 5 = 25 square units.

Front

What is the area of a circle with a radius of 3 units?

Back

Area = π × radius² = π × 3² = 28.26 square units.

Front

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

Back

Area = 1/2 × base × height = 1/2 × 10 × 5 = 25 square units.

Front

How do you calculate the area of the shaded region in a square with a circle inside it?

Back

Subtract the area of the circle from the area of the square.