1. the perimeter of a rectangle is equal to 280 meters. the ratio of its length to its width is 5: 2. how would you find the ratio of the area of the rectangle to the width of the rectangle. justify.

2. if the length and width were doubled. what is the ratio of the increase of the increased perimeter to the increase area?

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)