In a circle, a 135degrees sector has area 54pi in2. What is the radius of the circle?

72 pi  = pi (r^2)  (180/ 360)  divide out pi

72  = (1/2) r^2       multiply both sides by 2

144  = r^2       take the positive root

12 in  =   r

Step-by-step explanation:

step-by-step explanation:

in the absence of parentheses, i will have to make some assumptions:   i interpret your (3x+5/y^6)(4y^3/5)​ to mean:

3x + 5     4y^(3/5)       (3x + 5)(4)

* =

    y^6             1               y^(6-3/5)

if this is not what you expected, repost your question using parentheses to indicate whether you meant

4y^3

    or   4y^(3/5)

    5