We found the first answer but we don’t know for the second part. The third part talks about a cube and it has three differents sides… is it possible ? A cube has all the same sides.
So we need your help for the second part ^^
First part :
x is the longer
y is the wide
x*y=300
4x=y
x*4x=300
5x=300
x=300/5
x=60
60*y=300
y=300/60=5 But 60 isn’t four times longer than 5…
Third part :
We know that y=7
So x= 7/2=3.5 and z=3.5*3=10.5
x*y*z=7*3.5*10.5= 257.25m3
bye
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