X - 1/2 (if you meant the difference between)
Answer:
Silver
Step-by-step explanation:
Find the volume of the coin
<u>Volume of a cylinder</u>

Given:
Substituting given values into the formula to find the volume:


Find the density of the coin given it has a measured mass of 18.54 g
<u>Density formula</u>

where:
= density- m = mass
- V = volume
Given:
- m = 18.54 g

Substituting given values into the density formula:


Given:
Therefore, as
the coin is made from silver.
2+a / 2 = 4 and b+6 /2 = 10
2+a=8. and. b+6 = 20
a=6. and. b=14
(a,b) , the other endpoint, is thus (6,14)