If the thickness of the ice on a lake is x cm, it carries a truck of y ton, where y = 0.006x^2. How heavy of a truck can the ice be if it is 25 cm?

Also, same 0.006x^2, and what thickness should the ice have to withstand a 10 ton truck?

1 answer

y = .006 * 25^2 so evaluate

10 = .006 x^2 so solve for x
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