<PRE><B>Question 123051</B>
The surface-area 0f prism 9,6,and 7 
= 2(LB+BH+LH)=2(9*6 + 6*7 +7*9)
=2(54+42+63)=2(159)=318 sq units

volume for a rectangular prism with edges 9,6,and 7=9*7*6=63*6=378 Cu units

Ratio of Surface area : volume=318:378
=53:63

Ans 53:63
okay</PRE>