Final answer:
The electric potential at a height of 3.00 m is 339 V.
Step-by-step explanation:
The electric potential at a height of 3.00 m is equal to the product of the electric field and the height. To calculate the electric potential, multiply the electric field (1.13 x 10^2 N/C) by the height (3.00 m).
Electric potential = (Electric field) x (Height)
Electric potential = (1.13 x 10^2 N/C) x (3.00 m) = 339 V