Answer:
See the answer below
Step-by-step explanation:
a. The volume in the first measuring cylinder reads 70
while that of the second reads 95
. Hence;
V1 = 70
![cm^3](https://img.qammunity.org/2021/formulas/mathematics/middle-school/1w5fjjglifylqe4fudz371dyxior00hq3k.png)
V2 = 95
![cm^3](https://img.qammunity.org/2021/formulas/mathematics/middle-school/1w5fjjglifylqe4fudz371dyxior00hq3k.png)
b. An object will always displace its own volume in a liquid. Hence:
Volume V of the rock sample = V2 - V1
= 95 - 70 = 25
![cm^3](https://img.qammunity.org/2021/formulas/mathematics/middle-school/1w5fjjglifylqe4fudz371dyxior00hq3k.png)
c. Mass of A = 102 g
Volume of A = 25
![cm^3](https://img.qammunity.org/2021/formulas/mathematics/middle-school/1w5fjjglifylqe4fudz371dyxior00hq3k.png)
Density = mass/volume
Hence, density of A = 102/25 = 4.08 g/
![cm^3](https://img.qammunity.org/2021/formulas/mathematics/middle-school/1w5fjjglifylqe4fudz371dyxior00hq3k.png)