Question

volume of hollow cylinder
a) πR2h
b) πr2h
c) π(R2-r2)h
d) πR2(H-h)

Plz answer early,
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Answer 1

V = πh(r12 – r22) is the volume of hollow cylinder

Answer 2

Answer:-

$\sf \red{c) \: π(R² – r²)h}$

Explanation:-

$\sf We \: measure \: two \: radius \: in \: a \: hollow \: cylinder$

$\sf one \: for \: inner \: circle \: and \: one \: for \: outer$ $\sf circle \: formed \: by \: base \: of \: hollow \: cylinder.$

$\sf Suppose, \: R \: and \: r \: are \: the \: two \: radii \: of$ $\sf the \: given \: hollow \: cylinder \: with \: 'h' \: as \: the$ $\sf height \: then \: the \: volume \: of \: this \: cylinder$ $\sf can \: be \: written \: as:-$

$\sf V = πh(R² – r²)$

$\sf OR$

$\sf V = π(R² – r²)h$