Please help, similar shapes and congruence.​

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations

Acircle has a diameter of 10 what is the area of the circle? use 3.14 for pi. round to the nearest hundredth