Area Practice and Finding Missing Heights and Bases

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height

Front

If the area of a triangle is 20 in² and the base is 5 inches, what is the height?

Back

Height = 8 inches

Front

What is the formula for the area of a parallelogram?

Back

Area = base × height

Front

Find the area of a parallelogram with a base of 10 inches and a height of 5 inches.

Back

Area = 50 in²

Front

What is the formula for the area of a circle?

Back

Area = π × radius²

Front

If the area of a circle is 16π cm², what is the radius?

Back

Radius = 4 cm

Front

What is the formula for the area of a trapezoid?

Back

Area = 1/2 × (base1 + base2) × height

Front

Find the area of a trapezoid with bases of 10 inches and 6 inches, and a height of 4 inches.

Back

Area = 32 in²

Front

What is the relationship between the base and height of a triangle when the area is known?

Back

Area = 1/2 × base × height; height can be found if area and base are known.

Front

What is the area of a triangle with a base of 7 cm and a height of 6 cm?

Back

Area = 21 cm²