alleryA closed cylinder has radius 7 cm and height 15 cm. Find its total surface area using pi = 22/7.
A660 cm2
B1320 cm2
C968 cm2
D2310 cm2
Answer & Solution
Correct answer: C. 968 cm2
1. TSA = 2πr(r + h).
2. 2 × (22/7) × 7 × (7 + 15) = 44 × 22 = 968 cm2.
3. 660 is only the curved part and 2310 is the volume.
_Source: NCERT Class 8 Mathematics, Chapter 9 Mensuration, Example 7_
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