The answer is 20cm
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176
16 cm
This depends on what you mean by "it". The volume of the original cube is V = (80 cm)³ = 512,000 cm³. If the volume is decreased by 10%, then multiply the volume of the original cube by 0.9 to get 406,800 cm³. Otherwise, if the length of the cube is decreased by 10%, then: V = (80 cm * 0.9)³ ≈ 373248 cm³
n - (n * p) example: 100 decreased by 25%. 100 - (100 * 25%) 100 - (100 * 0.25) 100 - (25) 100 decreased by 25% is 75.
25 decreased by 19 percent is 20.25