Answer: 158.3
Step-by-step explanation:
The LCM of 210 and 450 is: 3150
Longest segment will be a diagonal of the prism d= √(a^2+b^2+c^2)= √(14^2+13^2+12^2)=√(509) approx = 22.56 cm
7% at 6 years would best fit their payment option as they would then be paying $238.69 monthly and that is under the $250