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National and Regional Contests
PEN Problems
PEN H Problems
54
54
Part of
PEN H Problems
Problems
(1)
H 54
Source:
5/25/2007
Show that the number of integral-sided right triangles whose ratio of area to semi-perimeter is
p
m
p^{m}
p
m
, where
p
p
p
is a prime and
m
m
m
is an integer, is
m
+
1
m+1
m
+
1
if
p
=
2
p=2
p
=
2
and
2
m
+
1
2m+1
2
m
+
1
if
p
≠
2
p \neq 2
p
=
2
.
calculus
integration
ratio
geometry
perimeter
quadratics
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