SSC CGL Model Paper 11

Question : 70 of 100

Marks: +1, -0

Find the length of the wire required to fence a square field 4 times having its area 8 hectares:

Solution:

8 hectares = 80000

\m^2

so, area = a^2 = 80000

⇒ a =200√2

m
so, perimeter

= 800√2

required wire

= 800√2 × 4 = 3200√2 m

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