Question

1 micrometer is ${10}^{-a}$ hectometer. What is value of a?

Answer 1

$1$ micrometer $={10}^{-6}$ meter and $1$ hectometer $={10}^2$ meter

So, $1$ micrometer $={10}^{-6}\times \frac{{10}^2}{{10}^2}$ meter $=\frac{{10}^{-6}}{{10}^2}\times 1$ hectometer $={10}^{-8}$ hectometer

Thus, $a=8$