Solve by finding the square root: 5 r 2 - 180 = 0 2.- You are building a rectangular planter. You want the area of the bottom to be 90 f2.You want the length of the planter to be 3 f longer than twice its width. What should the dimensions of the bottom of the planter be? 3.- Solve each equation by completing the square. If necessary, round to the nearest hundredth. y a 2 2 + 10 y + 8 = 0 + 8a = 513 4.- Solve each equation by using the quadratic formula. If necessary, round to the nearest hundredth. x 2 + 7 x + 10 = 0 C - 5c = 0