Area of quadrilaterals and triangles

Front

What is the formula to find the area of a triangle?

Back

A = 1/2 bh, where A is the area, b is the base, and h is the height.

Front

How do you calculate the area of a rectangle?

Back

Area = length × width.

Front

What is the area of a rectangle with a length of 15 units and a width of 9 units?

Back

Area = 15 × 9 = 135 square units.

Front

If the area of a rectangle is 72 square units and one side is 9 units, what is the other side?

Back

Other side = Area / one side = 72 / 9 = 8 units.

Front

What is the perimeter of a rectangle with a length of 10 units and a width of 5 units?

Back

Perimeter = 2(length + width) = 2(10 + 5) = 30 units.

Front

What is the formula for the area of a parallelogram?

Back

Area = base × height.

Front

How do you find the area of a triangle with a height of 4 mm and a base of 6 mm?

Back

Area = 1/2 × base × height = 1/2 × 6 × 4 = 12 mm².

Front

What is the area of a square with a side length of 5 units?

Back

Area = side × side = 5 × 5 = 25 square units.

Front

What is the formula for the area of a trapezoid?

Back

Area = 1/2 × (base1 + base2) × height.

Front

If a triangle has a base of 8 cm and a height of 3 cm, what is its area?

Back

Area = 1/2 × 8 × 3 = 12 cm².