Question

A gardener wants to fence a circular
garden of diameter 21 m. Find the length
of the rope, if he makes two round of
fence. Also, find the cost of the rope, if it
costs 4 per metre.​

Answer 1

Answer:

for this, first of all you have to find the circumference by the diameter given that is 21 M. then you have to multiply two by the the circumference. and then finally you have to multiply your result to 4.for your understanding I have written the equation below. I will be very happy if you get any help from my answer.

diameter =21 m

circumference = 21 x pie

= 21 x 22/7

=66 m.

farmer makes rounds = 2

so the rope required = 2x66=132m.

now the cost of ropevper metre = 4₹/m

so, total cost=4x132

=528 ₹/m

hope it will help you my cute mate.

wish you a very all the best for your tomorrow's exam. just go and crack it and become a topper.

may you will get a very bright future.

be intelligent be brainly.........

a very best of luck again........

(:

Answer 2

Answer:

$\fbox \pink{diameter} = 21m \\ \\ \fbox \purple{radius} = \frac{21}{2}m \\ \\ \fbox \red{circumference} = 2\pi \: r \\ \\ 2 \times \frac{22}{7} \times \frac{21}{2} = \frac{22}{7} \times 21 \\ \\ 22 \times 3 = 66m \\ \\ \fbox \green{length \: of \: rope \: required} = 2 \times 66 = 132m \\ \\ \fbox \blue{cost} = 1m \: rope = 4 \\ \\ 132m \: rope = 4 \times 132 = 528$