Question

2).Find the Surface area of a Cylinder whose radius is 3cm and height is 7cm​

Answer 1

Answer:

Hence, curved surface area of cylinder = 132 cm2. Total surface area = 188.57 cm2 and Volume = 198 cm

Answer 2

Answer:

188.4 cm²

Step-by-step explanation:

Given :

• Radius of a cylinder = 3 cm
• Height of the cylinder = 7 cm

To Find :

The total Surface area of a Cylinder

Solution :

We know that,

$\boxed {\textsf{Total surface of the cylinder = \mathrm {2\pi r(h+r)} }}$

So, substituting the values, we get,

[Note, the value of pi = 3.14]

Area = 2 × (3.14) × 3 × (3 + 7)

=> Area = 2 × 3.14 × 10 × 3

=> Area = 188.4 cm²

So, Total surface area of cylinder is 188.4cm²

❖ Extra information :

⟡ Some formulas related to cylinder :

$\odot \ \textsf{Volume of the cylinder = \mathrm {\pi r^2 h} }\\\odot\ \textsf{Curved surface of the cylinder = \mathrm{2\pi rh} }\\\odot\ \textsf{Total surface area of the cylinder = \mathrm{2\pi r(h+r)} }$

Hope it helps!

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