Decreases 5625

How much percent will the surface and volume of the cube decrease if the diagonal decreases by 10%?
b) if the diagonal increases by 10%?

Correct answer:

p1 =  19 %
p2 =  27.1 %
p3 =  21 %
p4 =  33.1 %

Step-by-step explanation:

S=K1.u2 p=110/100=109=0.9 q=p2=0.92=10081=0.81 p1=(1q) 100=(10.81) 100=19%
V=K2.u3  p2=(1p3) 100=(10.93) 100=27.1%
k=1+10/100=1011=1.1 p3=(k21) 100=(1.121) 100=21%
p4=(k31) 100=(1.131) 100=33.1%

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