Question

The area of a square field is 60025 metre square. A man cycles along its boundary at 18km/h. In how much time will he return to the starting point? ​

Answer 1

Step-by-step explanation:

Area of square field = 60025 sq.m.

Area of square = (side)²

So,

under root 60025= (side) ²

245= side

Since we are given that he cycles along the boundary of field

So, Perimeter of square field = 4× side

Perimeter of square field = 4× 245

Perimeter of square field =980m

So, Total distance = 980 m

Speed = 18 km/h = 18 × 5/18 = 5m/s

time = distance / speed

time = 980/ 5

time = 196 seconds

Hence he will return to starting point in 196 seconds.

Answer 2

Answer:

Area of square field = 60025 sq.m.

Area of square = (side)²

So,

under root 60025= (side) ²

245= side

Since we are given that he cycles along the boundary of field

So, Perimeter of square field = 4× side

Perimeter of square field = 4× 245

Perimeter of square field =980m

So, Total distance = 980 m

Speed = 18 km/h = 18 × 5/18 = 5m/s

time = distance / speed

time = 980/ 5

time = 196 seconds

Hence he will return to starting point in 196 seconds