To determine who is correct between Cisco and Beth regarding the height of triangle EFG, we need more information. The height of a triangle can be measured differently depending on how it's defined.
Part 1:
If GH and GJ are different segments representing the height of EFG from different points, both Cisco and Beth could be correct, as it depends on their respective definitions and how they measure the height. Without more context or information on how GH and GJ are defined and measured, we cannot determine who is correct.
Part 2:
To calculate the area of triangle EFG, you would need to know either the base and height of the triangle or the lengths of its sides. If you have the base (b) and height (h) of EFG, you can use the formula for the area of a triangle:
Area = (1/2) * base * height
If you have the lengths of the sides of EFG, you could also use Heron's formula to calculate the area. Please provide the necessary information to proceed with the area calculation.