मराठी

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

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प्रश्न

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

बेरीज
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उत्तर

Radius of tank (r) = 7 m

Height of tank (h) = 3 m

Then total surface area of this tank = 2πr(h + r)

= `2 × 22/7 × 7 (3 + 7)`

= 44 × 10

= 440 m2

Hence, quantity of desired metal sheet = 440 m2

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पाठ 11: Mensuration - Exercise 11.3 [पृष्ठ १८६]

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एनसीईआरटी Mathematics [English] Class 8
पाठ 11 Mensuration
Exercise 11.3 | Q 7 | पृष्ठ १८६
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