Surface Area
i learned how to connect shapes and then add the two surface areas together then take away the base x2 to find the total surface area of the connected shapes. I also learned that by creating a hole through a shape you are adding surface area. Another thing I learned is all the formulas to find surface areas of 3d shapes. Triangular prism = adding all individual sides together rectangular prism = 2(lxw+wxh+Lxh) cylinder = 2xpiexrxh + 2xpie x r to the power of 2. I found that it was really hard because if you got one little calculation wrong then the hole question was wrong. I did find memorizing the formulas and showing my work very easy though.