Find (i) The lateral or curved surface area of a closed cylindrical petrol storage tank that is 4.2 m in diameter and 4.5 m high. - Mathematics

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Sum

Find

The lateral or curved surface area of a closed cylindrical petrol storage tank that is 4.2 m in diameter and 4.5 m high.

`["Assume "pi=22/7]`

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Solution

Height (h) of cylindrical tank = 4.5 m

Radius (r) of the circular end of cylindrical tank = (4.2/2)m = 2.1m

 

Lateral or curved surface area of tank = 2πrh

`=(2xx22/7xx2.1xx4.5)m^2`

= (44 × 0.3 × 4.5) m2

= 59.4 m2

Therefore, CSA of tank is 59.4 m2.

  Is there an error in this question or solution?
Chapter 13: Surface Area and Volumes - Exercise 13.2 [Page 217]

APPEARS IN

NCERT Mathematics Class 9
Chapter 13 Surface Area and Volumes
Exercise 13.2 | Q 9. (i) | Page 217

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