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In a A B C ,A=(2pi)/3,b-c=3sqrt(3)c m a...

In a ` A B C ,A=(2pi)/3,b-c=3sqrt(3)c m` and area `( A B C)=(9sqrt(3))/2c m^2dot` then `' a '` is

A

(a) `6sqrt(3) cm`

B

(b) `9 cm`

C

(c) `18 cm`

D

(d) `6 cm`

Text Solution

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The correct Answer is:
B
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