Question

PLEASE HELP!! IM ON THE LAST QUESTIONNNN ( 30 points!)

Answer 1

`~~~~~\pi r^2 = 513\\\\ \implies r = \sqrt{(513)/(\pi)}\\\\ \implies r= \sqrt{(513)/(3.14)}\\\\\implies r=12.78~ \text cm.}\\\\\text{Hence the radius is 12.78 cm.}`

Answer 2

Explanation:

Area of circle = πr²

`\sf \boxed{r =\sqrt{ (Area)/(3.14)}}`

`\sf r =\sqrt{(513)/(3.14)}\\\\r = √(163.38)\\\\r = 12.78 \ cm`