Question

A circular garden whose diameter is 28m need to be fenced.what would be the length of the fencing wire required if gardener makes 3round of fence .also,find the cost of the wire if its costs ruppees 30per meter​

Answer 1

Answer:

Length if 264cm

Cost is 264 × 30 = 7920₹

Answer 2

ANSWER

As the garden is in the shape of circle.

Therefore,

Diameter of garden =28m(Given)

⇒ Radius of garden (r)=

2

28

=14m

As we know that circumference of the circle is given by-

Circumference =2πr

where as, r is the radius of circle.

Therefore,

Circumference of garden =2×

7

22

×14=88m

For 3 rounf of fence,

Length of wire required =3×88=264m

Given that the cost of wire is Rs.30 per m

Therefore,

Cost of wire =30×264=Rs.792.

Hence the length of wire required is 264m and the cost of required wire will be Rs.792.

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