Question

A rectangular field is 50 m by 40 m. Mahesh goes ten times round it. How much distance does he cover?

Answer 1

Dear student
$$\begin{gathered} \mathrm{Perimeter}\mathrm{of}\mathrm{field}=2(\mathrm{l}+\mathrm{b})=2(50+40)=180\mathrm{m} \\ \mathrm{So},\mathrm{distance}\mathrm{covered}\mathrm{by}\mathrm{Mahesh}\mathrm{in}10\mathrm{rounds}=10\times 180=1800\mathrm{m}=1.8\mathrm{km} \\ \left[\mathrm{As}1\mathrm{km}=1000\mathrm{m}\right] \end{gathered}$$
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