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Piyush Bamnawat

· started a discussion

· 1 Months ago

i think its wrong (Question: 273462.0 )

147/4 ?????

Question:

A semicircular thin sheet of a metal of diameter 14 cm is bent and an open conical cup is made. What is the capacity of the cup ?

Options:
A)

107843     cm3

B)

53943    cm3

C)

53923    cm3

D)

53933     cm3

Solution:

Ans: (b)

  

Sagar Sharma

· commented

· 1 Months ago

r = 7/2 i.e derived above and L(slant height of cone) = radius of semicircle i.e 7
and by pythagoras we can find H(height of cone) i.e root(L^2 - r^2) = 7root(3)/2
i hope it makes sense

Knowledge Expert

· commented

· 1 Months ago

Dear Student,
49 - 49/4 = 196-49 / 4 = 147/4
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