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Urchit Rathore

· started a discussion

· 1 Months ago

check d soln (Question: 189122.0 )

plz go through the soln again .
circumference of the sector should be equal to Curved surface area of cone not to circumference of its top circle

Question:
A cardboard sheet in the form of a circular sector of radius 30 cm and central angle 144° is folded to make a cone. What is the radius of the cone ?
Options:
A) 12 cm
B) 18 cm
C) 21 cm
D) None of these
Solution:
Ans: (A)

ATQ,


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