Question

A square field of area $31684$ sq.mts is to be enclosed with wire placed at heights $1,2,3,4$ mts above the ground. What length of the wire will be required, if its length required for each circuit is $5\%$ greater than the perimeter of the field?

• A. $2990.5$ m
• B. $2990.2$ m
• C. $2990.4$ m
• D. $2990.7$ m

Answer 1

Answer: (B)

$2990.2$ m

Area $=31684$ sq. m

${\text{side}}^2=31684=178$ m

Perimeter of square $4\times \text{side}=4\times 178=712$ m

Length of circuit is $5\%$ more than perimeter $=\frac{(712\times 105)}{100}=747.6)$

So, total length required $=4\times 747.6=2990.2$ m