Question

A closed cylindrical tank of radius 7 m and height 3 mis
made from a sheet of metal. How much sheet of metal is
required?
​

Answer 1

Answer:

440 m² sheet of metal is required

Step-by-step explanation:

Total surface area of a solid cylinder (TSA) = Curved surface area (CSA) + Sum of the areas of two circular ends of the cylinder = 2πrh + 2πr²

• Total surface area of a solid cylinder = 2πr(h+r)

• The lateral surface area of the curved surface area of a cylinder = 2πrh

Given:

• Radius of Cylindrical tank (r) = 7 m

• Height of cylindrical tank (h) = 3 m

Total surface area of cylindrical tank = 2πr(h+r)

⇒ Total surface area of cylindrical tank = 2× (22/7) × 7(3+7)

⇒ Total surface area of cylindrical tank = 44 × 10

⇒ Total surface area of cylindrical tank= 440 m²

Answer 2

Answer:

hope this help you

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