Question

5. The surface area of a desk is 31 dm2. Change this area to,um2

Answer 1

Answer:

$\large \boxed{3.1 \times 10^{11} \, \mu\text{ m}^{2}}$

Explanation:

1. Convert square decimetres to square metres

$\text{Area} = \text{31 dm}^{2} \times \left (\dfrac{\text{1 m}}{\text{10 dm}}\right )^{2} = \text{0.31 m}^{2}$

2. Convert square metres to square micrometres

$\text{Area} = \text{0.31 m}^{2} \times \left (\dfrac{\text{1 \mu m}}{10^{-6} \text{ m}}\right)^{2} = 3.1 \times 10^{11} \, \mu\text{m}^{2}\\\text{The surface area of the desk is \large \boxed{\mathbf{3.1 \times 10^{11} \, \mu} \textbf{ m}^{2}} }$