Kinda hard just try if you don't know, give it your best guess!

The circumference of a circle is 60 pi cm3what is the radius of the circle

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels