What is the approximate simple interest earned on $3180 if it is invested at 6.5% for 3 1/2 years rounded to the nearest dollar

Meghan has created a diagram of her city with her house, school, store, and gym identified. a. how far is it from the gym to the store? b. meghan also wants to walk to get some exercise, rather than going to the gym. she decides to walk along arc ab. how far will she walk? round to 3 decimal places.