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The volume of a right pyramid is 45 sqrt...

The volume of a right pyramid is `45 sqrt3 cm^3` and its base is an equilateral triangle with side 6 cm. What is the height (in cm) of the pyramid ?
एक लम्ब पिरामिड का आयतन `45 sqrt3` घन सेमी है और इसका आधार एक समबाहु त्रिधुज है जिसकी भुजा 6 सेमी है | इस पिरामिड की ऊंचाई (सेमी में ) ज्ञात करें |

A

15

B

18

C

12

D

20

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