PLz help It needs to be done in 10 mins

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)

The actual length of side t is 0.045cm. use the scale drawing to find the actual side length of w

What is the scale factor of axyz to auvw?