Perimeter of Squares, Rectangles, & Triangles

Front

What is the formula for the perimeter of a square?

Back

The perimeter of a square is calculated using the formula: P = 4s, where s is the length of one side.

Front

How do you calculate the perimeter of a rectangle?

Back

The perimeter of a rectangle is calculated using the formula: P = 2(l + w), where l is the length and w is the width.

Front

What is the formula for the perimeter of a triangle?

Back

The perimeter of a triangle is calculated by adding the lengths of all three sides: P = a + b + c.

Front

If the perimeter of a square is 40 cm, what is the length of one side?

Back

If the perimeter is 40 cm, then the length of one side is 10 cm (P = 4s, so s = P/4 = 40/4).

Front

A rectangle has a length of 8 cm and a width of 3 cm. What is its perimeter?

Back

The perimeter is P = 2(8 + 3) = 2(11) = 22 cm.

Front

What is the missing length if the perimeter of a triangle is 30 cm and the other two sides are 10 cm and 15 cm?

Back

The missing length is 5 cm (30 - 10 - 15 = 5).

Front

In an isosceles triangle, if the two equal sides are each 5 cm and the perimeter is 14 cm, what is the length of the base?

Back

The length of the base is 4 cm (14 - 5 - 5 = 4).

Front

What is the perimeter of a triangle with sides measuring 6 m, 8 m, and 10 m?

Back

The perimeter is 24 m (6 + 8 + 10 = 24).

Front

If a rectangle has a perimeter of 50 cm and a width of 10 cm, what is the length?

Back

The length is 15 cm (P = 2(l + w), so l = (P/2) - w = (50/2) - 10 = 15).

Front

What is the perimeter of a square with a side length of 7 cm?

Back

The perimeter is 28 cm (P = 4s, so P = 4 * 7 = 28).