Help please If Y is the circumcenter of STU, find each measure.

a) SV=
b) TU=
c) XU=
d) SY=
e) YW=
f) YX=

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)

Find the measure of the angle indicated in bold

What are the solutions of the following system? y=-2x^2 y=x-2