Question

volume of cylinder whose radius of the base is 7 cm and height is 20 cm.​

Answer 1

Given -

• Radius of cylinder = 7cm

• Height of cylinder = 20cm

Concept to find out .

• Volume of cylinder = ???

Formula used .

• $\boxed{ \underline \bold \blue {volume \: of \: cylinder = > \pi \: {r}^{2}h }}$

Solution -

• $volume \: of \: cylinder = > \pi \: {r}^{2}h \\ \\ = > \frac{22}{7} \times 7 \times 7 \times 20 \\ \\ = > 3080 {cm}^{3} \\ \\ \boxed{ \underline \bold \green{volume \: of \: cylinder = > 3080 {cm}^{3} }}$

Important information

• $\boxed{ \underline \bold \red{curved \: surface \: area \: of \: cylinder = > 2\pi \: rh}} \\ \\ \boxed{ \underline \bold \orange{volume \: of \: cone = > \frac{1}{3}\pi \ {r}^{2} h }} \\ \\ \boxed{ \underline \bold \pink{csa \: of \: cone = > \pi \: rl}}$
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