(a)
\The narrowest width of a hyperbola with a horizontal orientation corresponds to the length of the transverse axis.
\Standard from of the horizontal hyperbola is
.
Find
values.
In this case, 

.
The tower eccentricity is
.
Eccentricity
.
Substitute
.


.




.
Substitute the values
and
in standard form.
.
(b)
\If the top of the tower is 32 meters above the center of the hyperbola and the se is 76 meters below the center.
\Graph the hyperbola and the the horizontal lines
and
in same screen.
Identify the intersecting points.
\Observe the graph:
\The line
is intersecting the hyperbola at
and
.
Therefore, radius of the top of the tower is
.
The line
is intersecting the hyperbola at
and
.
Therefore, radius of the base of the tower is
.
(a)
.
(b) Radius of the top of the tower is
.
Radius of the base of the tower is
.