Length of each edge of a regular tetrahedron is 1 cm. Its volume is :

1.	Length of each edge of a regular tetrahedron is 1 cm. Its volume is :
A.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center> <span style=" text-decoration: overline;">3</span></center></td><td rowspan="2">cu.cm.</td></tr><tr><td style="text-align: center;">12</td></tr></table>
B.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2"> <span style=" text-decoration: overline;">3</span>cu.cm.</td></tr><tr><td style="text-align: center;">4</td></tr></table>
C.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center> <span style=" text-decoration: overline;">2</span></center></td><td rowspan="2">cu.cm.</td></tr><tr><td style="text-align: center;">6</td></tr></table>
D.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2"> <span style=" text-decoration: overline;">2</span>cu.cm.</td></tr><tr><td style="text-align: center;">12</td></tr></table>
Answer» E.

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Length of each edge of a regular tetrahedron is 1 cm. Its volume is :

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