Answer:
158
Step-by-step explanation:
5*8=40
8*3=24
3*5=15
Each of these measurements gets added twice, becasue there are 6 faces on a rectangular prism.
40 + 40 + 24 + 24 + 15 + 15 = 158
Is this simultaneous equations?
if yes then the first step is
make one of the unknown as the subject
64-25=39
All the square numbers are 1,4,9,16,25,36,49,64,81,100
9:{1,3 3,9}
18:{1,2,3 6,9,18}
