Question

The inner diameter of a cylindrical vessel is 3.5 cm. It is 100m deep. Find the cost of polishing the inner curved surface area at the rate of ₹20 per m2 find the the radius of the base​

Answer 1

Answer:

cost of polishing is ₹7700

radius is 3.5/2=1.75

Step-by-step explanation:

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Answer 2

Given : Inner diameter of a cylindrical vessel is 3.5 & Height of a cylindrical vessel is 100m.

To Find : Find the total cost of polishing ?

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Solution : Let the inner diameter of a cylindrical vessel be x.

$~$

• ${\sf{Radius~=~\cancel\dfrac{3.5}{2}~=~\bf{1.75m}}}$

$~$

◗Inner curved surface area (CSA) = 2πrh

$~$

$\pmb{\sf{\underline{Substituting~ the~ Given ~Values~:}}}$

$~$

$\qquad{\sf:\implies{2~×~\dfrac{22}{7}~×~1.75~×~1.75~×~100}}$

$\qquad{\sf:\implies{1925~×~4}}$

$\qquad:\implies{\underline{\boxed{\frak{\pink{\pmb{7700~m^2}}}}}}$★

$~$

Hence,

$\therefore\underline{\sf{The ~cost~ of ~polishing~ is~\bf{\underline{\pmb{₹7700}}}}}$