Helpp pls i may fail

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?

What is the sum of these mixed numbers 4 2/3+ 3 1/9