diff --git a/Other Algorithms/Fit_square_in_equilateral_triangle.cpp b/Other Algorithms/Fit_square_in_equilateral_triangle.cpp
new file mode 100644
index 000000000..7dee85b91
--- /dev/null
+++ b/Other Algorithms/Fit_square_in_equilateral_triangle.cpp	
@@ -0,0 +1,18 @@
+        #include<iostream>
+        #include<math.h>
+        using namespace std;
+             
+        int main(){
+        	
+        	int cases, base;
+            	cin>>cases;
+            	
+            	while(cases--){
+            		
+            		cin>>base;
+            		base=(base/2)-1;
+            		base=(base*(base+1))/2;
+            		cout<<base<<endl;
+            	}
+            	return 0;
+        }    
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