If the ratio of the radius of the base of a right circular c

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CDS-I 2018 Elementary Maths(PYSP)
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MATH

68

M: +1.00/-0.33

If the ratio of the radius of the base of a right circular cone to its slant height is 1 : 3, what is the ratio of the total surface area to the curved surface area?

[CDS-I 2018 Elementary Maths(PYSP)]

A 5 : 3

B 3 : 1

C 4 : 1

D 4 : 3