Question

A circus tent has a radius of 30 m · The ring at the centre for performance by artists is 10 m in radius · Find the area left for the audience ·

Answer 1

Hey mate..
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Given,

Radius of a circular tent , R = 30 m

We know,

Area of a circle = πR^2

Therefore,

Area of a circular tank = 22/7 × ( 30 )^2

= 22/7 × 30 × 30

= 2828.57 m^2

= 2828.6 m^2 ( approx. )

Also,

Radius of a circular ring at the centre, r = 10 m

We know,

Area of the circle = πr^2

= 22/7 × (10)^2

= 314.285 m^2

So,

Area of the space left for the audience

= πR^2 - πr^2

= ( 2826.6 - 314. 285 ) m^2

= 2512.315 m^2

Hope it helps !!