Question

Surface area of a cylinder. (see attached image please)

Answer 1

Answer:

$\large{ \tt{❃ \: EXPLANATION}} :$

• Firstly you need to remember the formula to find out surface area of a cylinder - Surface area of a cylinder = 2πr ( r + h ) where r is the radius of a circular face and h is the height of the cylinder.

• We're provided : Diameter of cylinder = 12 which means radius ( r ) = 6 cm [ Radius is the half of diameter ] & Height ( h ) = 25 cm & we know pi ( π ) = 22/7.

$\large{ \tt{❁ \: LET'S \: SOLVE}} :$

$\large{\boxed{ \tt{☄TOTAL \: SURFACE \: AREA \: OF\: CYLINDER= 2\pi \: r \: ( \: r + h)}}}$

- Plug the values & then simplify !

$\large{↦2 \times \frac{22}{7} \times 6(6 + 25) }$

$\large{↦2 \times \frac{22}{7} \times 6 \times 31}$

$\boxed{\large{↦1169.14 \: \tt{ {cm}^{2} }}}$

• Hence , The surface area of given cylinder is 1169.14 cm²

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