Area of composite figures 7th grade 2

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

Front

How do you find the area of a composite figure?

Back

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

Front

What is the area of a circle with a radius of 7 cm?

Back

Area = π × r² = π × 7² ≈ 153.94 cm².

Front

If a rectangle has a length of 10 cm and a width of 5 cm, what is its area?

Back

Area = 10 cm × 5 cm = 50 cm².

Front

What is the perimeter of a rectangle with an area of 48 cm² and a width of 4 cm?

Back

Length = Area / Width = 48 cm² / 4 cm = 12 cm; Perimeter = 2(length + width) = 2(12 cm + 4 cm) = 32 cm.

Front

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

Back

Area = 1/2 × base × height = 1/2 × 10 cm × 5 cm = 25 cm².

Front

How do you calculate the area of a circle?

Back

Area = π × r², where r is the radius.

Front

What is the area of a pizza with a diameter of 16 inches?

Back

Radius = 8 inches; Area = π × 8² ≈ 201.06 in².

Front

If you eat half of a pizza with an area of 201.06 in², how much pizza did you eat?

Back

100.53 in².

Front

What is the area of a square with a side length of 6 cm?

Back

Area = side × side = 6 cm × 6 cm = 36 cm².