The formula for volume of prism: 
<span>length * width * height.
0.5 * 4 * 6 = </span>12
To work out length divide area by the triangle size:
120 / 12 = 10,
So the answer is 10mm.
Hope this helps.
0.5 * 4 * 6 = </span>12
To work out length divide area by the triangle size:
120 / 12 = 10,
So the answer is 10mm.
Hope this helps.