Area of Parallelograms, Triangles, & Trapezoids

Front

What is the formula for the area of a parallelogram?

Back

Area = base × height

Front

What is the area of a triangle?

Back

Area = 1/2 × base × height

Front

What is the area of a trapezoid?

Back

Area = 1/2 × (base1 + base2) × height

Front

In a trapezoid, the bases are always __________.

Back

parallel

Front

What is the area of a rectangle?

Back

Area = length × width

Front

If the base of a triangle is 10 cm and the height is 5 cm, what is the area?

Back

Area = 1/2 × 10 cm × 5 cm = 25 cm²

Front

If a parallelogram has a base of 8 m and a height of 3 m, what is the area?

Back

Area = 8 m × 3 m = 24 m²

Front

What is the height of a trapezoid if the area is 40 m² and the bases are 5 m and 7 m?

Back

Height = (Area × 2) / (base1 + base2) = (40 m² × 2) / (5 m + 7 m) = 5 m

Front

What is the area of a rectangle with a length of 12 in and a width of 6 in?

Back

Area = 12 in × 6 in = 72 in²

Front

If a triangle has an area of 30 m² and a base of 10 m, what is the height?

Back

Height = (Area × 2) / base = (30 m² × 2) / 10 m = 6 m