A. if two angles are complementary angles, then the sum of the measures of two angles is 90°.
Answer:
X = 55
Step-by-step explanation:
If the angel is 90:
75 + 90 = 165
165 divided by 3 = 55
The answer is C it won’t let me do all the steps but I hope it helps
Answer:

Step-by-step explanation:
Let the side length of the square base =s feet
Let the height of the box = h
Given that the volume of the box = 
Volume of the box =
Then:

Surface Area of a Rectangular Prism =2(lb+bh+lh)
Since we have a square base, l=b=s feet
Therefore:
Surface Area of our closed box
