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Surface Areas and Volumes — Maths STD 10 — Question

CBSE BoardEnglish MediumSTD 10MathsSurface Areas and Volumes1 Mark
Question
A solid cylinder of radius rand height h is placed over other cylinder of same height and radius. The total surface area of the shape so formed is ____________ .
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Answer

$2 \pi r(r+2 h)$

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