Question

the area of square field is 60025 sq m .a man cycle along its boundary at 18 km/h. in how much time will he return to the starting point

Answer 1

See it is right answer given by me

Answer 2

Hii...______________________________________________
Area of square field= 60025 sq m. we know area of square = (side)²∴ (side)² = 60025⇒  side = 245 m

perimeter of square field = 4 x side
⇒ perimeter = 980 m

∴The distance the man covers in  1 complete cycle = 980 m
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[distance = speed x time]

speed in m/s = speed in km/h x 5/18

⇒ speed in m/s = 5 m/s 
⇒ time = 980 ÷ 5
=196 s
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∴ time taken by the man to cycle along its boundary at 18 km/h

= 196 s [Ans].
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Ps.:  Enjy
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