Question

it is required to make a closed cylindrical tank of height 1m base diameter 140 cm from a metal sheet how many square metre of sheet are required for the same​

Answer 1

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Answer 2

Answer:

Given that :-

Height of tank = 1 m = 100 cm

Diameter of base = 140 cm

Radius of base = 70 cm

To find :-

Total Area of Tank

Formula used :-

Total Area of Tank = 2πr(L + r)

$\huge{\sf{\boxed{\boxed{Solution:-}}}}$

[Putting the values,]

_______________________________

⇒ Total Area of Tank = 2πr (L + r)

⇒ Total Area of Tank = 2 × 22/7 × 70 × ( 100 + 70)

⇒ Total Area of Tank = 20 × 22 × 170 cm²

⇒ Total Area of Tank = 74800 cm²

⇒ Total Area of Tank = 7.48 m²

Hence,

7.48 m² squares meters of the sheet are required.