Answer
a. $$ 12.7\ cm$$
b. $$127 \ mm.$$
Work Step by Step
Since $1 in= 2.54 cm$ and $1 cm =10\ mm$, then we have
a. $$5\ in=5 \times 2.54 \ cm =12.7\ cm$$
b. $$5\ in=5 \times 2.54 \times 10 \ mm=127 \ mm.$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.