15.5 x 12.4 = 192.2 so the answer is 192.2 square feet.
36:21 in simplest form is 12:7, because 3 goes into both 36 and 21. Simplifying ratios is essentially the same thing as simplifying fractions. Once we have 12:7, we can't reduce any further, because 7 is prime.
Hope this helps!
Answer:
10x
Step-by-step explanation: