48=4r^2*5

Solution for 48=4r^2*5 equation:

Simplifying
48 = 4r2 * 5

Reorder the terms for easier multiplication:
48 = 4 * 5r2

Multiply 4 * 5
48 = 20r2

Solving
48 = 20r2

Solving for variable 'r'.

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

Add '-20r2' to each side of the equation.
48 + -20r2 = 20r2 + -20r2

Combine like terms: 20r2 + -20r2 = 0
48 + -20r2 = 0

Add '-48' to each side of the equation.
48 + -48 + -20r2 = 0 + -48

Combine like terms: 48 + -48 = 0
0 + -20r2 = 0 + -48
-20r2 = 0 + -48

Combine like terms: 0 + -48 = -48
-20r2 = -48

Divide each side by '-20'.
r2 = 2.4

Simplifying
r2 = 2.4

Take the square root of each side:
r = {-1.549193338, 1.549193338}