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^{3}at 10

^{◦}C and a coefficient of linear expansion of α = 2.5 × 10

^{−5}1 /K . What is the object’s density when the temperature is 25

^{◦}C?

I have tried using the equation ΔL=αL

_{°}ΔT but this equation has nothing to do with density.

the answer should be: 1248.6

Your help would be greatly appreciated!