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CBSE Class 9 Answered

MCQ based question
Asked by aditir | 22 Mar, 2009, 12:40: PM
answered-by-expert Expert Answer

The circumference of the semi circle  becomes the  circumference of the circular base of the conical cup.

So ,

since  the radius of the semi circle is 14 , so circumference of the semicircle=(22/7)*(14)=44

Thus the circuference of the circular base of the conical cup=44

Let the radius of the base of the cup=R

So,

 we have,

2*(22/7)*(R*)=44

So,

 R=7

The radius of the semicircle becomes the height(depth) of the cone=H

So, H=14

So,

 volume of the conical cup

=(1/3)(22/7)*(7*7)*(14)

 

 

Answered by | 22 Mar, 2009, 04:28: PM

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