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Ambarish Gupta

· started a discussion

· 1 Months ago

how come (Question: 310735.0 )

are of each new circle=pr^2/2....how???

Question:

A sphere of radius r is cut by a plane at a distance of h from its centre, thereby breaking this sphere into two different pieces. The cumulative surface area of these two pieces is 25% more then that of the sphere. What is the value of h ?

Options:
A)

r5    

B)

r7    

C)

r2    

D)

r11    

Solution:

Ans: (c)

  

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