Help me in solving VADD7 problem

help
,
1

My issue

My code

//Update the blanks in the code below to solve the problem

#include <stdio.h>

int main() {
  side s = 14 ;
  ___ area = _ * _ ;
  ___ cost = ____ * _ ;
  printf("%d __", ____ );   //Area and cost have to be output on separate lines
  printf("%d", ____ );      //'$' has to be printed after cost without any space
  printf("$"); 
  return 0;
}

Learning course: Learn C
Problem Link: CodeChef: Practical coding for everyone