45/360 × 8 squared pi = 25 kilometers
7% is the same as 7/100 so take
149.99 x 7/100 = $10.50 which is the TAX
and then add that to the original price
10.50 + 149.99 = 160.49
Answer: $ 2.20
Step-by-step explanation: 31.80-18.60= 13.20
13.20 divided by 6= 2.20
——————-
2.20 x 6= 13.2
13.20+ 18.60= 31.80