Question

guys please solve 12 , (iii) .

Answer 1

Area of square = side ✖ side =1024 m(square)
1024 = side(square)
square root of 1024 = side
32 m = side


Perimeter of square = 4 ✖ side
= 4 ✖ 32
= 128 m


if he takes 5 rounds of the field the
128 ✖ 5 = 640 m
4.5 km = 4,500 m

time = 640 / 4500
= 0.142 hour
= 8.52 minutes
= 511.2 seconds...



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Answer 2

Area of the square field = 1024 sq m

Side = √1024 = 32 m

Perimeter = 32 x 4 = 128 m
5 rounds = 128 x 5 = 640 m = 0.64 m

Time = speed x distance
Time = 4.5 x 0.64 = 2.88 hours

Time taken = 2.88 hours

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