A rectangle has a perimeter of 28cm and a length of 8cm. What is the width in cm

width of the rectangle is 6 cm.

Step-by-step explanation:

The length of the rectangle = 8 cm

Let the width of the rectangle = w cm

Perimeter = 28 cm

Now, we know that

The perimeter of a rectangle = 2 (Length + Width)

or, 2 (Length + Width) = 28 cm

⇒ 2 (8 + w) = 28

or, 16 + 2w = 28

⇒ 2w = 28 - 16 = 12

or, w = 6 cm

Hence, the width of the rectangle is 6 cm.