Respuesta :

my answer -

90° × π / 180°
= 0.5π rad
= 1.5707963268 rad

P.S

Happy to help you have an AWESOME!!! day :)
PHDFlopper
im assuming you mean radians not radius:

There are [tex] \frac{ \pi }{180 radians} [/tex] per degree

90([tex] \frac{ \pi }{180} [/tex])

1.5707963267949

The answer would be 1.57 radians (rounding to hundredth)