Answer: 9909.9
Step-by-step explanation: 9,800 divided by 140 is 70. so the diameter of the semicircle is 70. then you divide 70 by 2, which is 35. then multiply 35 by 3.14, which is 109.9. divide 109.9 by 2 since it’s a semicircle which comes out to 54.95. since there are 2 semicircles, multiply 54.95 by 2. which comes out to 109.9. then add 109.9 and 9,800!
