r^2 = 96
if ur familiar with solving equations, u know how u have to do the opposite to solve an equation...
example : 7 + 2x = 1...here it shows + 7...u would subtract 7 to move it to the other side...u would do the oppposite
and here, 5/x = 10...it shows division, but u do the opposite and multiply.
well...the opposite of ^2 us the square root...so taking the square root of both sides will eliminate the ^2
r^2 = 96
r = sqrt 96
r = (+-)9.78
