1 Answer

Luddig · Answer 1 · 2021-05-16T02:42:29+0000

Answer:

Given picture is a Cylinder.

As we know that in a Cylinder

${\boxed{\sf Volume ={\pi}r^2h}}$

${:}\longrightarrow$
$\sf {\frac {22}{{\cancel{7}}}}* t^2*{\cancel{7}}=84$

${:}\longrightarrow$
$\sf 22×t^2=84$

${:}\longrightarrow$
$\sf 22t^2=84$

${:}\longrightarrow$
$\sf t^2={\frac {84}{22}}$

${:}\longrightarrow$
$\sf t^2=3.81$

${:}\longrightarrow$
$\sf t={\sqrt {3.81}}$

${:}\longrightarrow$
$\sf t=1.95$

${:}\longrightarrow$
$\sf t=2cm (Approx)$

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