Question

Express $5cm$ in meter and kilometre.

Answer 1

Step 1: Convert the unit from centimetre to meter

Given data: $5cm$.

It is known that, $1cm=\frac{1}{100}m=0.01m$.

Thus, $5cm=\left(5\times 0.01\right)m=0.05m$.

Therefore, the given length can be expressed in meter as $0.05m$.

Step 2: Convert the unit from centimetre to kilometre

Given data: $5cm$.

It is known that, $1cm=\frac{1}{100000}km=0.00001km$.

Thus, $5cm=\left(5\times 0.00001\right)km=0.00005km$.

Therefore, the given length can be expressed in kilometre as $0.00005km$.

Hence, $\mathbf{5}\mathbf{}\mathit{c}\mathit{m}$ can be denoted as $\mathbf{0}\mathbf{.}\mathbf{05}\mathbf{}\mathit{m}$ and $\mathbf{0}\mathbf{.}\mathbf{00005}\mathbf{}\mathit{k}\mathit{m}$.