Answer:
Step-by-step explanation:

Why?
The first thing we need to do is find the area of the triangle, we can to that by subtracting the area of ABCD from ACBE, then, we can use the formulas to calculate the area for both triangle and rectangle to find "f" and "g".
Calculating we have:

Now, we can calculate "f" by using the formula to calculate the area of the triangle:

Now, finding "g" by using the formula to calculate the area of the rectangle, we have:

Hence, we have that:

Have a nice day!
Answer:
we can determine the volume of a right cylinder
by this formula : V = πr²h
Step-by-step explanation:
V = πr²h
The surface area is just the total of material used to make the object. So, in this case the surface area is just the material used to make the whole shoe box.
In this question, it states that you have to find the unit of measure that Alec will use to find the surface area of the box.
In this case, you can choose between inches, cm, ft, or many more.
The first thing you do is find the best unit to measure the shoe box with.
Cm would probably take to long to measure the lengths, and because 1 foot equals 12 inches, some sides of the box may not be 1 foot, so ft may be a little bit big.
So the only unit in between cm and ft is inches.
Inches would probably be the best unit of measure.