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# Can someone help me? the length the sides of a cuboid are 15cm, 16cm and 17cm. The length of each side is decreased by 2cm. Work out the percentage decrease in the volume of the cuboid?

Hi! in order to answer this question, you should first calculate the volume of the first cuboid, then the volume of the second cuboid, and then work out the percentage differences. cuboid 1: length X width X height 15 x 16 x 17 = 4080cm^3 cuboid 2: 13 x 14 x 15 = 2730cm^3 percentage difference = (new - old)/ old (2730 - 4080 / 4080)*100 0= 33.1% = 33.1% decrease hope that helps! Simone Tan
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Maths

Y=x+5

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