How can scientists find a dinosaur's weight when they just have all these bones?

individual way scientists estimate dinosaur weight is to lay dinosaur models or toys in the tub Really!
The scientists purchase a toy that matches their image of in what way flesh might look upon the skeleton. (They guess at by what means much muscle there was through studying the dinosaur's bones) And they measure the toy to diocese how small it is compared to the skeleton.
Then they push the toy down into a container of