radius = 1.3
area covered = pi x radius(squared)
= 3.142 x 1.3 x 1.3
= 5.31 mi square
double of this area = 5.31 x 2 = 10.62 mi square
if area = 10.62 .....what is radius ?
area = pi x radius squared
10.62 = 3.142 x r2
10.62 / 3.142 = r2 ( it means radius squared )
r2 = 3.38
take square root on both sides :
r ( square of r will be cut by square root )
and square root of 3.38 = 1.84
so after square on both sides : r = 1.84 mi
so radius to cover area of 10.62 mi square will be 1.84 mi.
HOPE IT HELPED !!!!!!
