Increase 3302

The cube has an edge of 70 dm long.
How many times does the volume and surface of the cube increase if we enlarge its edge four times?

Correct answer:

n1 =  16
n2 =  64

Step-by-step explanation:

a=70 b=4 a=4 70=280 S=6 a2=6 702=29400 V=a3=703=343000 S2=6 b2=6 2802=470400 V2=b3=2803=21952000 n1=S2/S=470400/29400=16
n2=V2/V=21952000/343000=64



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