Question

A Gardner wants to fence a circular garden of diameter 21m.find the length of the rope he need to purchase, if he makes two rounds of fence. also find the cost of rope, if the cost rupees 4 per metre .​

Answer 1

Answer:

see your answer is here

Step-by-step explanation:

First Diametre is 21

so radius is 21÷2

so

circumference of circle

2 pie r

pie = 22by 7

so 2 ×22÷7 ×21÷2

= 66

now he wanted to so 2 fence so

66 × 2 =132

now

1 metre =4 rupees

so

4 ×132 =583 rupees

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Answer 2

Answer:

length of rope is 132 m and cost is rs.528

Step-by-step explanation:

diameter is 21 m

so radius is 10.5 m

circumference of the garden= 2 x pi x radius

2 x (22/7) x 10.5

=66 m

if he makes 2 rounds, the length of rope required will be doubled

hence THE FARMER WOULD NEED 132 m LONG ROPE TO MAKE 2 ROUNDS OF THE CIRCULAR GARDEN.

cost of 1 m of rope=rs. 4

so cost of 132 m of rope= 132 x 4

rs.528