PLEASE HELP!!! IT WOULD MEAN SO MUCH IM REALLLLY CONFUSED AND DONT UNDERSTAND, I ALSO PUT A IMAGE OF THE QUESTION, ALSO SORRY FOR USING ALL CAPS I FEEL LIKE IT WOULD GRAB MORE PEOPLES ATTENTION

Find the length of the radius. Write your answer as
simplified radical.

PLEASE HELP IT WOULD MEAN SO MUCH IM REALLLLY CONFUSED AND DONT UNDERSTAND I ALSO PUT A IMAGE OF THE QUESTION ALSO SORRY FOR USING ALL CAPS I FEEL LIKE IT WOULD class=