Решить на языке с++ (35 баллов)длина выражена в сантиметрах выразить в

Изъяснение:

1)

int main()

int a;

float b;

cout lt;lt; "enter length in centimeters "; cin gt;gt; a;

b = a / 2.5;

coutlt;lt;"length in inches = " lt;lt; b lt;lt; endl;

2)

int main()

float a,b,c,d,e;

cout lt;lt; "enter the number of books purchased "; cin gt;gt; a;

cout lt;lt; "enter their price "; cin gt;gt; b;  

cout lt;lt; "enter the price of purchased notebooks "; cingt;gt;c;

cout lt;lt; "enter their price "; cin gt;gt; d;

e = a * b + c * d;

cout lt;lt; "Total price " lt;lt; e;

3)

int main()

float a,b,c;

cout lt;lt; "enter the length of the first leg "; cin gt;gt; a;

cout lt;lt; "enter the length of the secomd leg "; cin gt;gt; b;

c = (a*b) / 2;

cout lt;lt; " S= " lt;lt; c;