Hi can any one help with this? A stone has mass 80 g. When it is submerged in water in a measuring cylinder, the level rises from 120 cm to 160 cm?

a. What is the volume of the stone?
b. What is its density?

A)a square brown tarp has a square green patch green in the corner the side length of the tarp is (x + 8) and the side length of the patch is x what is the area of the brown part of the tarpb)a square red placemat has a gold square in the corner the side length of the gold square is (x - 2) inches with the width of the red region is 4 in what is the area of the red part of the placemat