to find weight of given body using parallelogram law of vector addition using gravesand appratus?

Answer 1

I think there may be some typographical error.

But I will try and answer as I interpret it.

I must say that it is required that the density or specific gravity is known.

Volume of four sided hip/pile of any material is given by 1/3 the area of the base multiplied by its height.

The area of the base can be calculated by dividing it in to no of parallelogram, and taking the sum.

Density is mass over volume.

Most hand books have the density of various material.

Other case would be a Bin(walled area) of a kind in that case the assumption will be that material is at a level height in the Bin and the volume will be area of the base multiplied by its height.

I am assuming that the apparatus is an material holding apparatus (irregular shaped containment Bin to hold grave sand).

PS
This is what I get if I spell check your Q? It is at the top right corner above the answer block, it is also there in same place on Q? block

To find weight of given body using parallelogram law of vector addition using grave sand apparatus?