Question

As part of a physics experiment students were asked to stretch a spring to extend it's length by 40%. If the original length of the spring is 45 cm, what should be the length of the extended spring? Enter your answer as a whole number. There is no need to

Answer 1

We need to find `40%` of `45` cm:

`0.4 xx 45 = 18`

So We extended the spring by `18` cm

The question asks for the total length, so we add `18 + 45 = 63`

The elongated spring is `63` cm long