Dear tutor, kindly show the solution for this and the answer must be 0.058. I need this now for my quiz. Thank you

A triangular canal has an open top 0.30 m by 6 m and closed vertical ends which are equilateral triangles 30 cm on each side. It is filled with water to half its depth. Find the volume of the water in cubic meters.

The answer must be:

0.058 cu. m.