Question

find the total surface area of a cylinder which has it's base 2.8 diameter and height =5​

Answer 1

Answer:

diameter =2.8

height =5

Area = 56.3

Explanation:

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Answer 2

$\huge{\mathbb{\purple{\underline{\orange{GIVEN:-}}}}}$

• Base of cylinder = 2.8 cm
• Height of cylinder = 5cm

$\huge{\mathbb{\red{\underline{\green{TO\:FIND:-}}}}}$

• Surface area of cylinder

$\huge{\mathbb{\blue{\underline{\pink{SOLUTION:-}}}}}$

Diameter of cylinder = 2.8cm

Radius of cylinder = $\dfrac{D}{2}= \dfrac{2.8}{2} = 1.4cm$

Height of cylinder = 5cm

$\large{\boxed{\color{aqua}{T.S.A.\:of\:cylinder\:=\:2πr(h+r)}}}$

Substituting the value in the above formula, we get

$\mapsto{\bold{T.S.A.\:=\:2× \frac{22}{7} × 1.4(5+1.4)}}$

$\mapsto{\bold{T.S.A.\:=\:2×22×0.2×6.4}}$

$\huge{\fcolorbox{Aqua}{navy}{Surface\:Area\:=\:56.32cm²}}$