8√3πcm2
24πcm2
15√3πcm2
36πcm2
Correct answer is D
Total surface area of a solid cone
r = 2√3
= πr2 + πrH
H = 4√3, πr(r + H)
∴ Area = π2√3 [2√3 + 4√3]
= π2√3(6√3)
= 12π x 3
= 36πcm2
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