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Question

A rectangular sheet of dimensions 1.57 m ×4.16 m was brought to form an ice-cream cone of radius 2.5 cm and height 6 cm. Then find out how many ice-cream cones can be prepared from that ?
  1. 512
  2. 640
  3. 320
  4. 1280

A
320
B
1280
C
640
D
512
Solution
Verified by Toppr

Given that the dimensions of rectangular sheet is 1.57×4.16
So the area of rectangular sheet is 6.5312m2
Given that the radius of ice-cream cone is 2.5cm and the height is 6 cm
So, the slant area of ice-cream cone is πrl=51.05 cm2=0.0051m2
The number of ice-cream cones which can be made from rectangular sheet is 6.53120.0051=1280
Therefore, option B is correct

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