Question

The diameter of a cylinder is 28 cm and its height is 40 cm. Find the
crved surface area, total surface area and the volume of the cylinder​

Answer 1

Answer:

here is your answer .......

Answer 2

$\bf Diameter = 28 \: cm \\ \\ \bf Radius = \frac{d}{2} = 14 \: cm \\ \\ \bf Height = 40 \: cm$

$\bf \underline{ \green{C.S.A \: of \: cylnder = 2\pi r h} }\\ \\ \Longrightarrow2 \times \frac{22}{7} \times 14 \times 40 \\ \\ \Longrightarrow2 \times 22 \times 2 \times 40 \\ \\ \large \bf \underline{\boxed{ \red{\Longrightarrow3520 \: {cm}^{2} }}}$

$\bf \underline{ \green{T.S.A \: of \: cylinder \: = 2\pi r(r + h) }}\\ \\ \Longrightarrow2 \times \frac{22}{7} \times 14(14 + 40) \\ \\ \Longrightarrow88 \times 54 \\ \\ \large \underline{\boxed{ \bf \blue{ \Longrightarrow4752 \: {cm}^{2} }}}$