Question

The radius of a circular field is $210$ m. The cost of fencing its circumference at the rate of Rs.$1.25$ per metre is

• A. Rs$1600$
• B. Rs.$1650$
• C. Rs.$1750$
• D. Rs.$1700$

Answer 1

Answer: (B)

Rs.$1650$

Circumference of the field $=2\pi r$

$=2\times \frac{22}{7}\times 210$

$=44\times 30$

$=1320m$

Cost of fencing the circular field = $1320\times 1.25=$Rs $1650$