18. The length of outer and inner diameter of hollow right circular cylinder are 16 cm. and 12
cm. respectively. Height of cylinder is 36 cm. Let us calculate how many solid cylinders of
2 cm, diameter and 6 cm. length may be obtained by melting this cylinder.
Answers
Answered by
1
Answer:
Solution :
The outer diameter = 16 cm <br>
The outer radius
<br> The inner diameter = 12 cm <br>
the inner radius
. <br> Height of the cylinder
. <br> So, the volume of the materials of the hollow cylinder <br>
. <br> The radius of small cylinders to be made
and their lengths = 6 cm each. <br>
The volume of each small cylinders to be made
<br> So the required number of small cylinders
. <br> Hence the required number of cylinders to be made is equal to 42. <br> [ N.B. : If the outer and inner radius ( not diameter) be 16 cm and 12 cm respectively, then the number of cylinders is 168. ]
Similar questions