7 x 3= 21 you can also use a calculator to help you
Answer:
c = 41 ft
Step-by-step explanation:
To solve this problem, we can use the pythagorean theorem, which is defined by the formula
. We are given both the lengths of the legs, so all we need to do is to plug them both in and solve for c:

This is the first option.
You gotta divide $6.45 and 3 together to find the answer