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?
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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?
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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
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