Answer
(a) 125 cm
(b) 40 in
Work Step by Step
The given expression is $$p=5s$$
(a) The given length of s is 25 cm. Substitute for s in the expression.
$p=5s=5(25)=125$ cm
(b) The given length of s is 8 in. Substitute for s in the expression.
$p=5s=5(8)=40$ in