X = 289-X=359-269
X = 289-X=90
X = 289-90
X = 199
_________________
(289-199)+269=359
3 5/16 + ( d - 1 7/16 ) = 9 1/16
d - 1 7/16 = 8 17/16 - 3 5/16
d = 5 12/16 + 1 7/16
d = 8 19/16
d = 9 3/16
S(полная)=S•6
S=a•a
a-сторона куба
a=2r
S=4r*2
S(полная)=6•4r*2=24r*2=600