Area and Perimeter Formulas

Front

What is the formula for the perimeter of a triangle?

Back

P = a + b + c, where P is the perimeter and a, b, c are the lengths of the sides.

Front

What is the formula for the area of a triangle?

Back

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

Front

What is the formula for the perimeter of a square?

Back

P = 4s, where P is the perimeter and s is the length of a side.

Front

What is the formula for the area of a square?

Back

A = s^2, where A is the area and s is the length of a side.

Front

What is the formula for the area of a circle?

Back

A = πr^2, where A is the area and r is the radius.

Front

How do you calculate the perimeter of a rectangle?

Back

P = 2(l + w), where P is the perimeter, l is the length, and w is the width.

Front

What is the formula for the area of a rectangle?

Back

A = l * w, where A is the area, l is the length, and w is the width.

Front

What is the relationship between the radius and diameter of a circle?

Back

The diameter is twice the radius: d = 2r.

Front

What is the formula for the circumference of a circle?

Back

C = 2πr, where C is the circumference and r is the radius.

Front

What is the difference between perimeter and area?

Back

Perimeter is the total distance around a shape, while area is the amount of space inside a shape.