Computer scienceProgramming languagesKotlinTypes and data structuresBasic operations

Floating-point types

Explain the result

Report a typo

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

val base = readln().toDouble()
val height = readln().toDouble()
val area = (base * height) / 2

println(area)

You have entered the following base and height:

2.2 4.01

The result is:

4.4110000000000005

However, your calculator says that the result is 4.411.

Explain the result of your program.

Select one option from the list

Operations with Doubles produce approximate results; use Floats to get the exact result.

The program uses an invalid formula to calculate the area.

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

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

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