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Question

If the radius and the height of a cone is 3 cm and 4 cm respectively, then its slant height is .


Correct Answer
A
5 cm
Your Answer
B
4 cm
Your Answer
C
7 cm

Solution

The correct option is A 5 cm
Given,
the radius of the cone 'r' = 3 cm, 
the height of the cone 'h' = 4 cm. 


Applying pythagoras theorem, we get,

r2+h2=l2
32+42=l2

l=32+42 cm
=9+16 cm
25 cm
=5 cm

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