How do i find radius and center of x^2+y^2-4x=0

Nparallelogram lmno, what are the values of x and y? x = 11, y = 14 x = 11, y = 25 x = 55, y = 14 x = 55, y = 25n parallelogram lmno, what are the values of x and y? x = 11, y = 14 x = 11, y = 25 x = 55, y = 14 x = 55, y = 25

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?

Multiply. write your answer in simplest form. 3/8 x 5/7