Area vs. Perimeter

Front

What is Area?

Back

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

Front

What is Perimeter?

Back

Perimeter is the distance around a shape, measured in linear units.

Front

When do you use Area?

Back

You use Area when you want to cover a surface, like painting a wall or laying down carpet.

Front

When do you use Perimeter?

Back

You use Perimeter when you want to measure the distance around an object, like putting ribbon around a card.

Front

If a rectangle has a length of 5 units and a width of 3 units, what is its Area?

Back

Area = length × width = 5 × 3 = 15 square units.

Front

If a rectangle has a length of 5 units and a width of 3 units, what is its Perimeter?

Back

Perimeter = 2 × (length + width) = 2 × (5 + 3) = 16 units.

Front

What happens to the Area if you double the length of a rectangle?

Back

The Area will double if only the length is doubled, but if both length and width are doubled, the Area will quadruple.

Front

What happens to the Perimeter if you double the length of a rectangle?

Back

The Perimeter will increase by the same amount as the new length added.

Front

Can two shapes have the same Perimeter but different Areas?

Back

Yes, two shapes can have the same Perimeter but different Areas, like a square and a rectangle.

Front

What is the formula for finding the Area of a rectangle?

Back

Area = length × width.