Answer: 72ft²
Explanation: In the Triangle, you will have to extend the higher part of the height down to the lower part to add the six feet to the other six feet which will give you 12 ft for the height and for the base we will use the 15 ft - 3 ft which will be used to get the base and that will be the new base which we will be using in the context of this. Which will be 12 ft so using the formula half base x height. you're going to do half * 12 * 12 which is going to give you 72 feet squared
