A closed cylindrical tank of radius 7 m and height 3 m ismade from a s

1.	A closed cylindrical tank of radius 7 m and height 3 m ismade from a sheet of metal. How much sheet of metal isrequired? please guys help me out
Answer» GIVEN : A closed cylindrical TANK of radius 7 m. A closed cylindrical tank of height 3 m. To Find : The sheet of metal is required = ? Solution : As we know that : Area of metal sheet = TSA of cylinder = Area of closed cylindrical tank Now, ⇒TSA of cylinder = 2πr(R + h) ⇒TSA of cylinder = 2 × 22/7 × 7 (7 + 3) ⇒TSA of cylinder = 2 × 22 × 10 ⇒TSA of cylinder = 44 × 10 ⇒TSA of cylinder = 440 m² Hence,the sheet of metal required is 440 m². Formulas related to cylinder and cone : Volume of cylinder = πr²h T.S.A of cylinder = 2πrh + 2πr² Volume of cone = ⅓ πr²h C.S.A of cone = πrl T.S.A of cone = πrl + πr²

A closed cylindrical tank of radius 7 m and height 3 m ismade from a sheet of metal. How much sheet of metal isrequired? please guys help me out

Answer»

GIVEN :

A closed cylindrical TANK of radius 7 m.
A closed cylindrical tank of height 3 m.

To Find :

The sheet of metal is required = ?

Solution :

As we know that :

Area of metal sheet = TSA of cylinder = Area of closed cylindrical tank

Now,

⇒TSA of cylinder = 2πr(R + h)

⇒TSA of cylinder = 2 × 22/7 × 7 (7 + 3)

⇒TSA of cylinder = 2 × 22 × 10

⇒TSA of cylinder = 44 × 10

⇒TSA of cylinder = 440 m²

Hence,the sheet of metal required is 440 m².

Formulas related to cylinder and cone :

Volume of cylinder = πr²h
T.S.A of cylinder = 2πrh + 2πr²
Volume of cone = ⅓ πr²h
C.S.A of cone = πrl
T.S.A of cone = πrl + πr²

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A closed cylindrical tank of radius 7 m and height 3 m ismade from a sheet of metal. How much sheet of metal isrequired? please guys help me out ​