Question

A rope 66cms long has been put in the form of a circle find the area of the circle so formed​

Answer 1

We know that,

The circumference of circle=66cm

2πr=66

22/7r=66/2

r=33*7/22

r=10.5

So,

Area=πr^2

=>22/7*10.5*10.5

=>78.57m^2

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Answer 2

Solution:-

Given:-

Length of Rope = 66 cm.

To Find:-

Area of Circle = ?

Find:-

Since,

The Rope is put in the form of a Circle.

=) Height of the Rope = Circumference of Circle

=) 66 = 2πr

=) r = ( 66 × 7)/(22 × 2 )

=) r = 21/2 cm.

Now,

Area of the Circle = πr²

=) Area = ( 22/7 ) × ( 21/2 ) × ( 21/2 )

=) Area = 693/2 cm²

=) Area = 346.5 cm²

Hence,

The Area of Circle is 346.5 cm².