A solid metallic cylinder of diameter 12 cm and height 15 cm is melted and recast into toys in the shape of a cone of radius 3 cm and height 9 cm. Find the number of toys so formed.
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7
A cone has a radius of 3 cm and height of 5 cm, what is the volume of the cone?
Answer
V≈47.124 cubic cm
The following formula is used for calculating the volume (V) of a cone.
where r is the radius and h, the height.
Substitute r = 3 and h = 5 into the formula.
Answered by
39
volume of cylinder =πr×r×h
=22/7×6×6×15
= 1697.14
volume of cone =1/3×π×r×r×h
= 1/3×22/7×3×3×9
=84.85
number of toys = volume of cylinder/volume of cone
=1697.14/84.85
= 20
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