Question

The volume of a cylindrical post box is 2,200 cu.cm. It has a radius of 10 cm, find the height of the post box

please don't write useless words and help me find the correct ans​

Answer 1

Answer :-

• Height = 7 cm

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To Find :-

• The Height of the Cylindrical Post Box.

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Given :-

• Volume of Cylindrical Post Box = 2200 cm³

• Radius = 10 cm

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Step By Step Solution :-

☆ Volume of Cylinder = πr²h

$\implies2200 = \pi {r}^{2} h \\ \\ \implies2200 = \cfrac{22}{7} \times 10 \times 10 \times height \\ \\ \implies2200 = \cfrac{2200}{7}\times\:height \\ \\ \implies \cancel \cfrac{ 2 2 00 }{ 2200} \times 7 = height \\ \\ \implies \: height = 7cm$

Therefore Height = 7 cm

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Important Formulas :-

• Volume of Cylinder = πr²h

• Total Surface Area of Cylinder = 2πr ( r + h )

• Curved Surface Area of Cylinder = 2πrh

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