Finding Length or Width from area

Front

To find the length or width of a rectangle given the area, what operation should you do?

Back

Divide the area by the known length or width.

Front

What is the formula for the area of a rectangle?

Back

Area = Length × Width.

Front

If the area of a rectangle is 20 cm² and the length is 5 cm, what is the width?

Back

Width = Area ÷ Length = 20 cm² ÷ 5 cm = 4 cm.

Front

Back

Front

Back

Front

If a rectangle has an area of 3/20 mile and a width of 3/8 mile, what is the length?

Back

Front

What does it mean if a rectangle has an area of 0?

Back

It means that either the length or the width (or both) is 0.

Front

How do you convert a mixed number to an improper fraction?

Back

Multiply the whole number by the denominator, add the numerator, and place over the original denominator.

Front

What is the relationship between area, length, and width in a rectangle?

Back

The area is directly proportional to both the length and the width.

Front

If the width of a rectangle is doubled, what happens to the area?

Back

The area is also doubled, assuming the length remains the same.