90.25=3*9.8*r

Solution for 90.25=3*9.8*r equation:

Simplifying
90.25 = 3 * 9.8r

Multiply 3 * 9.8
90.25 = 29.4r

Solving
90.25 = 29.4r

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-29.4r' to each side of the equation.
90.25 + -29.4r = 29.4r + -29.4r

Combine like terms: 29.4r + -29.4r = 0.0
90.25 + -29.4r = 0.0

Add '-90.25' to each side of the equation.
90.25 + -90.25 + -29.4r = 0.0 + -90.25

Combine like terms: 90.25 + -90.25 = 0.00
0.00 + -29.4r = 0.0 + -90.25
-29.4r = 0.0 + -90.25

Combine like terms: 0.0 + -90.25 = -90.25
-29.4r = -90.25

Divide each side by '-29.4'.
r = 3.069727891

Simplifying
r = 3.069727891