Computer scienceProgramming languagesJavaBasicsOperations on primitive types

Floating-point types and operations

Explain the result

Report a typo

Suppose, you have a program that calculates the area of a triangle. It reads a base and a height from the standard input.

Scanner scanner = new Scanner(System.in);

double base = scanner.nextDouble();
double height = scanner.nextDouble();
double area = (base * height) / 2;

System.out.println(area);

You entered the base and the height.

2.2 4.01

The result is:

4.4110000000000005

But your calculator says that the result is 4.411.

Explain the result of your program.

Select one option from the list

4.4110000000000005 is the exact answer, 4.411 is only an approximate result.

The program uses an invalid formula to calculate the area.

Operations with floating-point types can produce an inaccurate result.

Operations with double's produce approximate results, use float's to get the exact result.

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