7cm
14cm
28cm
98cm
196cm
Correct answer is B
1/3 πr2 x 9 = 1848
3 x πr2 = 1848 r2 = 1848/3 x 7/22 r = 14
Volume of a cone=13πr2h
13×227×r2×9=1848
r2=1848×722×3
r2=196∴
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