Question

scientists are creating a material that may replace damaged cartilage in human joints. this hydrogel can stretch to 21 times its original length. if a strip of hydrogel measures 3.2 cm, what would its length be when stretched to capacity?

Explanation:

Step1: Identify the operation

We need to multiply the original length by the stretching - factor.
$3.2\times21$

Step2: Perform the multiplication

$3.2\times21 = 67.2$ (cm)

Answer:

$67.2$ cm