Area of composite figures, lesson 9.3

Front

What is the area of a rectangle with a length of 10 cm and a width of 6 cm?

Back

60 square cm

Front

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

Back

Area = 1/2 × base × height

Front

Find the area of a square with a side length of 5 cm.

Back

25 square cm

Front

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

Back

28.26 square cm (using π ≈ 3.14)

Front

How do you find the area of a composite figure?

Back

Divide the figure into simpler shapes, find the area of each, and then sum them up.

Front

What is the area of a trapezoid with bases of 8 cm and 5 cm, and a height of 4 cm?

Back

26 square cm (Area = 1/2 × (base1 + base2) × height)

Front

Find the total area of a rectangle (length 4 cm, width 3 cm) and a triangle (base 4 cm, height 3 cm).

Back

Total area = 12 square cm (rectangle) + 6 square cm (triangle) = 18 square cm

Front

What is the area of a composite figure made of a rectangle and a semicircle?

Back

Area = Area of rectangle + Area of semicircle

Front

If a rectangle has an area of 48 square cm and a width of 6 cm, what is its length?

Back

Length = 8 cm (Area = length × width)

Front

What is the area of a parallelogram with a base of 10 cm and a height of 5 cm?

Back

50 square cm (Area = base × height)