1.57=(3.14r^2)/2

Solution for 1.57=(3.14r^2)/2 equation:

1.57=(3.14r^2)/2

We move all terms to the left:

1.57-((3.14r^2)/2)=0

We multiply all the terms by the denominator


-((3.14r^2)+(1.57)*2)=0


We calculate terms in parentheses: -((3.14r^2)+(1.57)*2), so:

(3.14r^2)+(1.57)*2

We add all the numbers together, and all the variables

(3.14r^2)+3.14

We get rid of parentheses

3.14r^2+3.14

Back to the equation:

-(3.14r^2+3.14)


We get rid of parentheses

-3.14r^2-3.14=0

a = -3.14; b = 0; c = -3.14;
Δ = b2-4ac
Δ = 02-4·(-3.14)·(-3.14)
Δ = -39.4384
Delta is less than zero, so there is no solution for the equation