Question

The equation r = (sqrt A)/(pi) gives the radius r of circle with area A. What is the radius of a circle with the given area? Write your answer as a simplified radical and as a decimal rounded to the nearest hundredth.

a. 50 ft^2

Answer 1

r = sqrt(50) /sqrt pi = sqrt (25*2) /sqrt pi
= (5 sqrt 2) /sqrt pi

3.98 ft

Answer 2

by the way you wrote that wrong
pi r^2 = A

r^2 = (A/pi)

r = sqrt (A/pi)
which is
sqrt A/sqrt pi

Answer 3

That's exactly what it said in the textbook.

Answer 4

The formula.

Answer 5

It is incorrect then
The area of a circle is pi r^2

a = pi r^2
r^2 = a/pi
r = sqrt (a/pi) = sqrt a/srt pi
NOT
(sqrt a) / pi NO !

The text did NOT make that error, like no way. It is in your parentheses.

Answer 6

perhaps[is a computer]text/book may refer env of any 'even',en the slang of 'authored book'circle of publishers,factor geom address etc,informations!