Answer: 253.5
Step-by-step explanation:
If your equation is 6s^2, all your doing is:
6x6.5^2,
or the long-form
(6.5*6.5) + (6.5*6.5) + (6.5*6.5) + (6.5*6.5) + (6.5*6.5) + (6.5*6.5) = 253.5