Question

The radius of a circular park is 2.1m. Find the

cost of fencing it at the rate of Rs12 per metre​

Answer 1

$\sf \huge\underline \purple{Given:}$

• Radius of circular park is 2.1m.
• Cost of fencing is ₹12 per metre.

$\sf \huge \underline \pink{To \: find:}$

• Cost of fencing

$\sf \huge \underline \red{Concept:}$

To find the cost of fencing we have to find circumference of circular park and then multiply it by ₹12.

$\sf \huge \underline \green{Solution:}$

$\sf \because \: As \: fencing \: is \: done \: at \: circumference.$

circumference of circle=2πr

$➩\sf2 \times \frac{22}{7} \times 2.1 \: m$

➩13.2m

Cost of fencing =13.2×₹12

➩₹158.4

So cost of fencing of circular park is ₹158.4

$\large \mathcal{ \fcolorbox{orange}{aqua}{ \pink{✯Tʜᴀʟᴀ }}}$

Answer 2

Step-by-step explanation:

so correct answer is 158.4

hope you will understand this