Question

the area of square field is 50625 m square A man cycles along its boundary at 18 km per hour in how much time will he return at the starting point

Answer 1

Area = 50625 m²

Length of 1 side = √50625 m² = 225 m

The return to starting point, the man would have to cover the whole boundary.

Perimeter = 4 × side = 4 × 225 m = 900 m

Speed = $\frac{18 km}{hr}$ × $\frac{5}{18}$ = $\frac{5 m}{s}$

Time = $\frac{Distance}{Speed}$

Time = $\frac{900 m × s}{5 m}$ = 180 seconds