Question

50 square metres = _________ square decametre ($da{m}^2$ ).

• A. $100$
• B. $10$
• C. $0.5$
• D. $500$

Answer 1

The correct option is C $0.5$

We know that:

$1$ decametre $=10$ metre or $1m=0.1dam$

Thus, $1m^2=(0.1{)}^{2}da{m}^2$

So, $50m^2=50\times (0.1{)}^{2}da{m}^2=0.5da{m}^2$