Question

answer plz............

Answer 1

to find its weight in water at first you need to calculate the upthrust which will be equals to the weight of the displaced liquid and then the weight of the body in water will be its mass minus the upthrust

relative density is equals to density of the body by density of water which is equals to mass of the body or volume of the body by density of water

Answer 2

for fist one answer 900 gf, for second one answer 10