SOLUTION: a box has a length of x centimeters. If the width is 10 cm shorter than the length and the height is half the length find the volume and surface area

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Question 883241: a box has a length of x centimeters. If the width is 10 cm shorter than the length and the height is half the length find the volume and surface area
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
For a box,
V=L%2AW%2AH
V=x%2810-x%29%28x%2F2%29
V=%2810-x%29x%5E2%2F2
V=5x%5E2-x%5E3%2F2
.
.
.
SA=2LH%2B2LW%2B2WH
SA=2x%28x%2F2%29%2B2x%2810-x%29%2B2%2810-x%29x%2F2
SA=x%5E2%2B20-2x%2B10x-x%5E2%2F2
SA=30x-x%5E2