Two people are eating hotdogs the first person starts with 1 and each person increases by 1 for 20 rounds, what would the total be after 20 rounds?

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.