LA 271 Module 10 Homework Set 19. A statue with a circular base is to be placed in an elliptical grass area as shown below. Find the area of the grass. The equation for the grass ellipse is 36x2 + 72y = 3600 and the circle is x2 + (y + 4)2 = 9, in meters. -12 - -10 Answer 20. A landscape design calls for a stone walkway made of three semi annuli as shown in the figure below. One case of stones costs $35 and covers 20 square feet. Find the most likely cost of the stones needed to tile the walkway when R = 10 feet and r = 5 feet. Answer 21. Extra Credit: in the space below, make a composite relative to your major and show the area composition. 6 | Page