What is the measure of ZSRT?
MZSRT =
degrees

Me n o w. i need t h i s. 10 points

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)

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.