Basic Geometry Formulas

Front

What is the formula for the perimeter of a square?

Back

Perimeter = 4 × side length.

Front

What is the formula for the area of a parallelogram?

Back

Area = base × height.

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2π × radius.

Front

What is the formula for the area of a trapezoid?

Back

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

Front

What is the formula for the area of a triangle?

Back

Area = (1/2) × base × height.

Front

What is the perimeter of a square with a side length of 4 in?

Back

Perimeter = 4 × 4 in = 16 in.

Front

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

Back

Area = 10 in × 5 in = 50 in².

Front

What is the circumference of a circle with a radius of 4?

Back

Circumference = 2π × 4 = 8π or about 25.12.

Front

What is the area of a trapezoid with bases of 10 cm and 6 cm, and a height of 4 cm?

Back

Area = (1/2) × (10 cm + 6 cm) × 4 cm = 32 cm².

Front

What is the area of a triangle with a base of 8 cm and a height of 5 cm?

Back

Area = (1/2) × 8 cm × 5 cm = 20 cm².