The perimeter of a rectangle is 36cm. If it is 12 cm long, find it's width

Answer 1

Let's use the formula for perimeter of a rectangle:

Perimeter = 2(length + width)

We know that the perimeter is 36cm and the length is 12cm, so we can substitute those values in:

36cm = 2(12cm + width)

Now we can solve for the width:

36cm = 24cm + 2width

Subtract 24cm from both sides:

12cm = 2width

Divide both sides by 2:

6cm = width

Therefore, the width of the rectangle is 6cm.