Question

the inner diameter office circular well is 3.5 and full stop it is 10m deep.find
it's inner curved surface area,

Answer 1

Radius=3.5/2
HV=depth=10

CSA = 2πrh
=2*22/7*3.5/2*10
=110m sq

Answer 2

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${\huge{\underline{\underline{\sf{\red{Solution:-}}}}}}$

(i) Let r be the radius of the base and h be depth of the well.Now,

$\boxed{\fcolorbox{red}{yellow}{Curved Surface Area = }}$ 2πrh

$=( 2 \times \frac{22}{7} \times \frac{3.5}{2} \times 10) {m}^{2}$

$= {110m}^{2}$

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$\huge\orange{★}\pink{ItzRisiηgStɑr}\orange{★}$