Mathematics · Mensuration
A hollow cylindrical pipe is open at both ends. The external radius is 15 cm and the internal radius is 8 cm. The length of the pipe is 28 cm and it is coated with rust-proof polish on the inner and outer curved surfaces as well as on both circular rings at the ends, at a rate of ₹2.20 per cm². If the polisher asks for 25% of the total cost in advance, how much amount remains to be paid? (Use π = 22/7)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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₹8,349
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