A = 81 square in.
s = sqrt(A)
s = sqrt(81)
s = 9 in.
You cross multiply. So 61 over 18 = x over 100. You multiply 61 and get the answer of 1600. Now with what you have left, you divide that with 18 and you should get your answer of <span>338.888889. Make sure to round it to whatever it tells you to round to!</span>
Answer:
a
Step-by-step explanation:
