So hi! .. this project was a fun thing i made when i was bored .. so heres how to use it - click on what you want to calculate -type in your measurements( cm only) - see the answer and type it in the comments!
I give most of the credit to my IRL friend @lightscrscream for giving me the idea with their project - Area calculator- please check their project out- https://scratch.mit.edu/projects/1214723926/ please click the star and the heart and you are free to remix .. thank you!!