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3. A factory manufactures 120000 pencils daily. The peneils are cylindrical in shape each of length 25 cmrence of base is 1.5 cm. Determine the cost of colouring the curved surfaces of the pencilsand circumferene of base is 1.5 cm. Determine the cost ofmanufactured in one day at cost 0.05 per dm2uhoidal nond which is |
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Answer» Number of pencils manufactured in one day = 1,20,0001 decimeter(dm) = 10 centimeter(cm)length = 25cm = (25/10) dm = 2.5 dmcircumference = 1.5cm = (1.5/10) dm = 0.15dm curved surface area= circumference× length = 2.5×0.15 dm² =0.375 dm²curved surface area of all pencils = 0.375×1,20,000 = 45,000 dm²cost of colouring = Rs.0.05 per dm²total cost = 0.05×45,000 = Rs. 2250 |
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