Question

measuring volume
8.
9.
10.

1. what is the volume of the rock?
2. why do some graduated cylinders have a plastic ring around it?

Explanation:

Step1: Identify initial and final volumes

Initial volume of water in the graduated - cylinder (before adding rock) is 110 mL. Final volume (after adding rock) is 130 mL.

Step2: Calculate volume of rock

The volume of the rock is equal to the difference between the final and initial volumes of water in the graduated - cylinder. So, Volume of rock=Final volume - Initial volume.
Volume of rock = 130 mL - 110 mL=20 mL

Answer:

20 mL