Question

The radius of the circular garden is 10m. The cost of fencing the garden atthe rate of Rs.11 per meter will be:

Answer 1

Answer:

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Step-by-step explanation:

now here area of circular garden=area of circle

so here radius of circular garden(r)=10 cm

thus then

area of circular garden=pi×r square

put pi=3.14 for easy calculation

so thus we get

=3.14×10×10

=3.14×100

=314

hence area of circular garden=314 cm.square

so thus then

cost of fencing the whole garden=cost of fencing per meter×area of garden

=314×11

=3454 Rs

hence cost of fencing the circular garden of radius 10cm at the rate of 11Rs per meter is 3454 Rs

Answer 2

Answer:

The circumference of circular garden = 2πr

=> 2 × 22/7 × 10

=> 62.8m

.°. cost of fencing garden= rs. 11 × 62.8 = Rs. 690.8

Note:

It's not necessary to find out the area of the circular garden but the circumference of the circular garden is required to know because, we need to know the cost of fencing around a circular garden.