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2πr=22

πr=22/2

r=11/π (π=22/7)

r=11/22/7

r=11×7/22

r=7/2 or 3.5m

area of circle=πr²

=(22/7)(7/2)²

=(22/7)(49/4)

=11×7/4

area of circle=77/4m² or 19.25m²

Note

We know that,

Circumference of circle=

So,

Area of circle=

So,

⇒

We know that,

Circumference of circle=

So,

Area of circle=

So,

⇒