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public cpp v1 · immutable#include <stdio.h>int main(void){float pi = 3.14;float ans = 0;int var = 0;cout<<"please enter Base of the triangle.";cin<<var;ans=pi*(var*var);cout<<ans;return 0;}#include <stdio.h>int main(void){float pi = 3.14;float ans = 0;int var = 0;cout<<"please enter Base of the triangle.";cin<<var;ans=pi*(var*var);cout<<ans;return 0;}