Question

Write 49 cm² in mm^2?

Answer 1

`4900 {mm}^(2)`

Explanation:

`1 cm = 10mm \\ 1cm * 1cm = 10mm * 10mm \\ 1 {cm}^(2) = 100 {mm}^(2) \\ 49 {cm}^(2) = 49 * 100 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 4900 {mm}^(2)`