Multiple choice

A military of height $8.25\ m$ is in the form of a right circular cylinder of base diameter $30\ m$ and height $5.5\ m$ surmounted by a right circular cone of same base radius. Find the length of the canvas use in making the tent, if the breadth of the canvas is $1.5\ m$

  1. $500.26$m
  2. $224.26$m
  3. $824.26$m
  4. $None\ of\ these$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The cone has vertical height 2.75 m and radius 15 m, so its slant height is 15.25 m. The canvas area is pi*15.25*15 + 2pi*15*5.5, and dividing by the canvas breadth 1.5 m gives approximately 824.26 m.

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