The lengths of the sides of a triangle are in the extended ratio 7 : 9 : 10. the perimeter of the triangle is 52 cm. what are the lengths of the sides?

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.