This is part of a Chemical Equilibrium question and I'm just a bit stuck on how to work out the problem with scientific notation and my calculator..

(3.1 x 10tothepower -2)to be squared

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(8.5 x 10tothepower -1) x (3.1 x 10tothepower -3)to be cubed

I have the answer in my worksheet but I'm unsure of how it was got. I have tried but I got a completely different answer (0.12156...)