Question

Find the surface area of the cylinder

Answer 1

Explaination :

After refering the diagram given in attachment, we clearly came to knew that the radius of the cylinder is 6 cm and height of that cylinder is 4 cm.

• Radius (r) = 6 cm
• Height (h) = 4 cm

As we know that total surface area of cylinder is calculated by the formula :

• T.S.A. = 2πr (h + r)

Where,

• r is radius
• h is height
• Value of π is 22/7

★ Putting the values in the formula :

>> T.S.A. = 2πr (h + r)

>> T.S.A. = 2 × (22/7) × 6 (6 + 4)

>> T.S.A. = 2 × (22/7) × 6 (10)

>> T.S.A. = 2 × (22/7) × 6 × 10

>> T.S.A. = 2 × (22/7) × 60

>> T.S.A. = (44 / 7) × 60

>> T.S.A. = 44 × 60 / 7

>> T.S.A. = 2640 / 7

>> T.S.A. = 377

★ Therefore,

• Surface area is 377cm²

Answer 2

• Surface area of the cylinder is 377 cm² (approximately)

Explanation:

Given :-

• Radius of the cylinder = 6cm
• Height of the cylinder = 4 cm

To find :-

• Surface area

Solution :-

We know that,

• Surface area of cylinder = 2πr(h + r)

Substituting the required values,

➝ Surface area= 2 × 22/7 × 6 (6 + 4)

➝ Surface area = 264/7 (10)

➝ Surface area = 2640/7

➝ Surface area ≈ 377 cm²

Hence,

• Surface area of the cylinder is 377 cm² (approximately)