9. The diameter of a park is 42m. Around it from outside a path 3.5 metre wide is
constructed. Find the cost of fencing the path from inside and outside at rupees 10
per metre.
Pls Pls Pls help fast
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two circles touch Each Other externally the sum of the areas is 149 Pi cm and the distance between the centres is 17 cm find the radius of the circle
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