Question:medium
The outer rolling surfaces of 8 similar small rollers, each having a radius of 9 cm and length as 12 cm are to be painted at a rate of Rs. 15 / \( \text{cm}^2 \). What will be the total cost of painting (in Rs.)?
The outer rolling surfaces of 8 similar small rollers, each having a radius of 9 cm and length as 12 cm are to be painted at a rate of Rs. 15 / \( \text{cm}^2 \). What will be the total cost of painting (in Rs.)?
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In mensuration, "rolling surface" always refers to the curved part, excluding the circular flat ends.
Updated On: Apr 1, 2026
- 80788.7
- 80488.7
- 81280.5
- 81388.8
Show Solution
The Correct Option is D
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