Question

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Answer 1

Answer:

Step-by-step explanation:

given

height og cylender =1 m

volume=15.4 litres

1 litre=0.001 cubic meter

therefore

volume=15.4X.001=.0154 cubic meter

we know that volume of cylinder is:

$V=\pi r^{2}h$

subsituting values in this formula

$V=\frac{22}{7}Xr^{2}X1$

$.0154=\frac{22}{7} Xr^{2}$

solving and we get

r=0.07 meter

now we can calculate total surafe area of cylinder i.e. metal sheet require to make the cylinder:

Total surface area of cylinder=$2\pi r(r+h)$

=$2X\frac{22}{7}X.07(.07+1)\\=0.4708 m^{2}$   answer

Answer 2

Answer:

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Step-by-step explanation:

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