Add Body fat percentage calculator

[Viveksati5143]

Please assign me this issue @S-ishita

[Srijita-Mandal]

@Viveksati5143 give some description

[Viveksati5143]

A body fat percentage calculator is a tool that estimates the percentage of body fat based on certain measurements, such as height, weight, and body circumference. It is used to determine the amount of fat versus muscle mass in the body and can be a useful tool for assessing overall health and fitness levels. Body fat percentage calculators can provide an estimate of body fat percentage, but it's important to note that they are not a substitute for a medical diagnosis or advice from a healthcare professional. @Srijita-Mandal

[Viveksati5143]

@Srijita-Mandal ???

[Viveksati5143]

Only 1 hour is left for jwoc make this my last issue

[Srijita-Mandal]

@Viveksati5143 go for it.