Answer:
#include <iostream>
using namespace std;
int main()
{
float radius = 5.4;
float circumference = 2 * 3.14 * radius;
float area = 3.14 * radius * radius;
cout<<"the circumference of the circle is "<<circumference<<endl;
cout<<"the area of the circle is "<<area<<endl;
return 0;
}
Explanation:
Include the library iostream for using the input/output instructions.
create the main function and define the variable with value. Then,
use the formula to calculate the circumference and are of circle.


here, choose 
after that, display the result.
Note: All variable define in float type.
Answer:
algorithms for finding the area
Explanation:
you need algorithms to find out any computer input information.
It could be any thing of your chose
Answer: True
Explanation: The potential error in Word is defined as the error that arises when it tries to post some content or text but the user is not sure whether it is posted or not.In Word, the error is relate top the spellings, phrase,grammar etc, in which the Word tries to give alternatives to the particular word or text.
The error is marked with the underline that can be red which means the spelling is incorrect ,green shows some grammatical error and blue is for the inconsistency in the format. Thus, the given statement is true.