Area of composite figures 7th grade

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, circles, triangles, and squares.

Front

How do you find the area of a rectangle?

Back

The area of a rectangle is found by multiplying its length by its width (Area = length x width).

Front

What is the formula for the area of a circle?

Back

The area of a circle is calculated using the formula A = πr², where r is the radius of the circle.

Front

What is the area of a semi-circle?

Back

The area of a semi-circle is half the area of a full circle, calculated as A = (1/2)πr².

Front

How do you find the area of a composite figure?

Back

To find the area of a composite figure, calculate the area of each simple shape that makes it up and then sum those areas.

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is calculated using the formula A = (1/2)bh, where b is the base and h is the height.

Front

If a rectangle has a length of 4 cm and a width of 3 cm, what is its area?

Back

Area = 4 cm x 3 cm = 12 cm².

Front

If a circle has a radius of 2 m, what is its area?

Back

Area = π(2 m)² = π(4 m²) ≈ 12.57 m².

Front

What is the area of a rectangle with a length of 8 ft and a width of 4 ft?

Back

Area = 8 ft x 4 ft = 32 ft².

Front

How do you calculate the area of a shaded region in a composite figure?

Back

To calculate the area of a shaded region, find the area of the entire figure and subtract the area of the unshaded part.