Incorrect result for basic one and two digit arithmetic

[J-M-L]

@tj4yt0mk

Below is my result using your code as well. You can see that my inputs are being read in correctly but the multiplication by 3.14 is what is causing issues.

Enter radius: 2.00
Radius square: 4.00
The area is: 12.03

this is weird. Can you print pi as well ?

float radius;
float pi = 3.14;
float area;

void setup()
{

  Serial.begin(115200);
}

void loop()
{
  Serial.print("Enter radius: ");
  while (Serial.available() == 0) ;

  radius = Serial.parseFloat();
  // debug
  Serial.println(radius);

  // more debug
  Serial.print("Radius square: ");
  Serial.println(radius * radius);

  // more debug
  Serial.print("pi: ");
  Serial.println(pi, 6i);


  area = pi * radius * radius;
  Serial.print("The area is: ");
  Serial.println(area);
  Serial.println();
}