OA,OB,OC are there mutually perpendicular straight lines in space. If ¯¯¯¯¯¯¯¯OA=a,¯¯¯¯¯¯¯¯OB=b, and ¯¯¯¯¯¯¯¯OC=c, then the volume of the pyramid OABC is abck. Find the value of k.
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Solution
The volume of right triangular prism = area of base × height