Composite Figures

Front

What is a composite figure?

Back

A composite figure is a shape that is made up of two or more simple geometric shapes, such as rectangles, triangles, circles, and more.

Front

How do you calculate the area of a rectangle?

Back

Area = length × width.

Front

How do you calculate 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 (use 3.14 for π).

Front

How do you find the area of a composite figure?

Back

Divide the figure into simple shapes, calculate the area of each shape, and then sum the areas.

Front

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

Back

Area = 3.14 × (5 cm)² = 78.5 cm².

Front

If a rectangle has a length of 10 cm and a width of 4 cm, what is its area?

Back

Area = 10 cm × 4 cm = 40 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

How do you round a number to the nearest tenth?

Back

Look at the hundredths place; if it's 5 or more, round up the tenths place by 1.

Front

What is the area of a shaded region if the total area is 50 cm² and the unshaded area is 30 cm²?

Back

Area of shaded region = Total area - Unshaded area = 50 cm² - 30 cm² = 20 cm².