Mathematics · Mensuration
A hollow cylindrical pipe has an external radius of 7 cm, internal radius of 6 cm, and height of 20 cm. Find the total surface area of the pipe (both ends included). (Use π = 227)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 11670 cm2
- 21485 cm2
- 31600 cm2
- 41716 cm2✓
Correct answer
1716 cm2
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