Answer: 1600 cents or 16 US dollars
Step-by-step explanation:
Given information
20 cent coin is 1.2 mm thick
The total length is 21.6 cm
- 1 cm = 10 mm
- 21.6 cm = 21.6 × 10 = 216 mm
Set variables
Let x be the number of 20-cent coins
Set equation
1.2x = 216
Divide 1.2 on both sides
1.2x / 1.2 = 216 / 1.2
x = 80
Find the value of the pile
Number of coins × Coin value
= 80 × 20 cent
= [tex]\boxed{1600\ cents}[/tex]
Hope this helps!! :)
Please let me know if you have any questions
