Area and Perimeter of Rectangles and Triangles

Front

What is the formula for the perimeter of a rectangle?

Back

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

Front

What is the formula for the area of a rectangle?

Back

The area of a rectangle is calculated by the formula: A = l × w, where l is the length and w is the width.

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is calculated by the formula: A = \frac{b \cdot h}{2}, where b is the base and h is the height.

Front

How do you find the perimeter of a rectangle?

Back

To find the perimeter of a rectangle, add up the lengths of all the sides.

Front

How do you find the perimeter of a triangle?

Back

To find the perimeter of a triangle, add up the lengths of all the sides.

Front

What is the unit of measurement for area?

Back

The unit of measurement for area is square units, such as cm², m², etc.

Front

What is the unit of measurement for perimeter?

Back

The unit of measurement for perimeter is linear units, such as cm, m, etc.

Front

If a rectangle has a length of 10 cm and a width of 5 cm, what is its area?

Back

The area is A = 10 cm × 5 cm = 50 cm².

Front

If a triangle has a base of 8 cm and a height of 5 cm, what is its area?

Back

The area is A = \frac{8 cm \cdot 5 cm}{2} = 20 cm².

Front

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

Back

The perimeter is P = 2(10 cm + 5 cm) = 30 cm.