alleryIf the curved surface of a cylinder is cut open and laid flat, what shape results?
ASquare
BRectangle
CCircle
DTrapezium
Answer & Solution
Correct answer: B. Rectangle
1. Wrapping a strip around a can fits it exactly.
2. The strip is a rectangle with height h.
3. Its length equals the circle around the base.
_Source: NCERT Class 8 Mathematics, Chapter 9 Mensuration, 9.4.3 Cylinders_
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