What are we doing, adding, subtracting, multiplying.....
Answer:
Step-by-step explanation:
3.5 is one side, and 10 is the other. the perimeter is the sum of all sides, so you can add 3.5 and 10 together, then multiply that by two. the answer is 27.
Step 3 is incorrect , bradan should have cube rooted both sides instead of dividing it by 3
I'm pretty sure the answer is C. 4