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 two-dimensional shape.

Front

How do you calculate the area of a rectangle?

Back

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

Front

What is the formula for the area of a square?

Back

A = side × side or A = side².

Front

What is the difference between units and square units?

Back

Units measure length, while square units measure area.

Front

If a square has a side length of 5 cm, what is its area?

Back

A = 5 cm × 5 cm = 25 sq. cm.

Front

If a rectangle has a length of 10 cm and a width of 4 cm, what is its perimeter?

Back

P = 2(10 cm + 4 cm) = 28 cm.

Front

What is the perimeter of a square with a side length of 6 cm?

Back

P = 4 × 6 cm = 24 cm.

Front

How do you find the area of a triangle?

Back

A = 1/2 × base × height.