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Course: UP Class 8th > Unit 16

Lesson 5: Mensuration 18(e)
Math
UP Class 8th
Mensuration
Mensuration 18(e)
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Surface area of a cone

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Problem

A company plans to construct an open conical water tank of height 8 m and base radius 15 m. They have a sheet of metal that is 1.7 m long.
Assume the extra width of metal required for welding and other wastage is 30 cm.
What width of the metal sheet will be required to construct the tank? Note: Take π=3.14 and report your answer correct to two decimal places.
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
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