Question

a circular ground of radius 50 meter is sorrounded by a 5 meter wide road you want to cover the road with tile find the total cost of tiling if the rate of tiling per square metre is 30 rupees
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Answer 1

Answer:

Cost of Tiling = Rs 49455

Step-by-step explanation:

r = 50 m  

Area of circular ground = $\pi r^{2}$

                                       = 3.14 * (50)²

                                       = 3.14 * 2500

                                       = 7850 m²                    ------------------ ( 1 )

R = r + 5m = 50m +5m = 55m

Area of circular ground and circular road = $\pi R^{2}$

                                                                    = 3.14 * (55)²

                                                                    = 3.14 * 3025

                                                                    = 9498.5 m²    -----( 2 )

Area of Road around circular ground = ( 2 ) - ( 1 )

                                                              = 9498.5 - 7850

                                                              = 1648.5 m²  

Cost of Tiling = 1648.5 * 30

                       = Rs 49455    Ans.  

Answer 2

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