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 .
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Answer:
We know that area of circle = pi ×r²
= 3.14 ×30 ×30 - 3.14 ×10 × 10
= 2826 - 314
= 2512 m²
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Answer= 2514.28 m square
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