NumericalModerate2 marks
2(ii)
A solid metallic cylinder is cut into two identical halves along its height. The diameter of the cylinder is 7 cm and the height is 10 cm. Find :
Calculate the total cost of painting the two halves at the rate of ₹ 30 per cm². (use π = 22/7)
Topic: Mensuration
Previous-year question practice database
Answer
Exam answer
Cost = total painted area × ₹30 per cm².
Explanation
Substitute the total area from part (a).
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