Question

4. The area of a square field is 75625 square metre A man cycles along its
boundary at 20km/hr. In how much time will he return to the starting point?​

Answer 1

Answer:

55 hours

Step-by-step explanation:

As we know area of a square => X²

where x is side of square

=> x² = 75625

=> x = 275

if side of square = 275

so boundary of field is => 4x

=> 4(275) = 1100 km

=> so time taken by man => 1100/20 = 55

Answer 2

Step-by-step explanation:

area = s^2

75625 = s^2

√75625= s

275 = s

perimeter = 4×s

perimeter = 4 × 275

perimeter = 1100meter = 1.1 km

speed = distance / time

20km/ h = 1.1 km / time

time = 1.1 / 20

time = 0.06 h