Pls answer number 7 it is for math that is also due tomorrow and no links or pictures

Acircular garden with radius of 8 feet is surrounded by a circular path with a width of 3 feet. what is the approximate area of the path alone? use 3.14 for π

If the altitude is drawn to the hypotenuse of a right triangle, then the two triangles formed are similar to the original triangle and to each other. which set of triangles shows the similar triangles created by the altitude in the diagram?

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.