Question 449824
the search for a missing boat covered a circular region with an area of 164km^2. what was the radius of the search region?
:
{{{pi*r^2}}} = 164
r^2 = {{{164/pi}}}
r^2 = 52.2
r + {{{sqrt(52.2)}}}
r = 7.225 km is the radius
;
:
Check solution on a calc: enter {{{pi*7.225^2}}} results: 163.99 ~ 164