Area and Perimeter

Front

What is the definition of perimeter?

Back

Perimeter is the total distance around the outside of a shape.

Front

How do you calculate the perimeter of a rectangle?

Back

Add the lengths of all four sides or use the formula: P = 2(length + width).

Front

What is the definition of area?

Back

Area is the amount of space inside a shape, measured in square units.

Front

How do you calculate the area of a rectangle?

Back

Multiply the length by the width: Area = length × width.

Front

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

Back

50 square centimeters (10 cm × 5 cm = 50 cm²).

Front

If a rectangle has a perimeter of 30 cm and a length of 10 cm, what is its width?

Back

10 cm (P = 2(length + width) => 30 = 2(10 + width) => width = 10 cm).

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height.

Front

If a triangle has a base of 6 cm and a height of 4 cm, what is its area?

Back

12 square centimeters (Area = 1/2 × 6 cm × 4 cm = 12 cm²).

Front

What is the relationship between area and perimeter?

Back

Area measures the space inside a shape, while perimeter measures the distance around it.

Front

What is the unit of measurement for area?

Back

Square units (e.g., square centimeters, square meters).