Question

A closed metalic cylinder has its base diameter 56cm and it is 2.25 m high.find the cost of the metal used to make it if it costs ruppes 80 per square metre.​

Answer 1

Step-by-step explanation:

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Answer 2

$\large{\underline{\underline{\sf \purple{ Question }}}}$

A closed metalic cylinder has its base diameter 56cm and it is 2.25 m high.find the cost of the metal used to make it if it costs ruppes 80 per square metre.

$\large{\underline{\underline{\sf \pink{ Answer }}}}$

Radius = ${\frac{diameter}{2}=\frac{56}{2}cm=28cm}$

Height = 2.25m

We have to convert radius in m

${\frac{28}{100}m=0.28m }$

T. S. A =${2πr(r+h)=2×}{\frac{22}{7}×0.28×(0.28+2.25)=1}$

${76×2.53m^{2}=4.4528m^{2}}$

${Cost \: of \: metal = ₹(4.4528×80)=₹356.22}$

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