7. Linda plans to make eight conical party hats for her niece's birthday party. She wants each hat to be 9 inches tall and the bases of each to be 20 inches in circumference. How much material will she use to make the hats?

Which of the following transformations will make coincide with ? a. counter-clockwise rotation 90º about a, followed by a translation 5 units to the right b. translation 5 units to the right, followed by a reflection across the y-axis c. translation 5 units to the right, followed by a reflection across the x-axis d. translation 1 unit up and 5 units to the right, followed by a reflection across the x-axis