Question

A square whose area is 64 $c{m}^2$ has to be fenced . Find the total cost of fencing if the rate of fencing is ₹ 2 per metre.

• A. ₹ 32
• B. ₹ 64
• C. ₹ 108
• D. ₹ 128

Answer 1

The correct option is B

₹ 64

Area of square $=(side{)}^2$

$Sid{e}^2$ = 64 $c{m}^2$

$\therefore$ Side = 8 cm

Total cost = perimeter x cost of fencing

Total cost $=(4\times 8)\times ₹2$

$=₹64$