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ubiregiinc · Mar 10, 2015 · 032a429 · 032a429
1 parent fc1800e
commit 032a429
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/math.rb b/math.rb
@@ -46,7 +46,7 @@ def area_of_disk(radius)
 end
 
 def area_of_ring(outer, inner)
-  area_of_disk(outer) - area_of_ring(inner)
+  area_of_disk(outer) - area_of_disk(inner)
 end
 
 def sum(array)