There is 5 room, a cat-like robot wants to turns off or on the room's light. The first room was lighted on the second also lighted on but the 3 and 5 was not lighted on. If the robot found a room lighted on, it will switch off the light. And when the robot found a room lighted off it will switch on the light. How many times will the robots switch off all lights? (infinity is not a number!)

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)