Answer:
the combined height of 3 nickels, 2 nickels, and 1 nickel is 11.70 mm.
Explanation:
The height of one nickel is approximately 1.95 mm. Therefore, the combined height of:
Three nickels = 3 x 1.95 mm = 5.85 mm
Two nickels = 2 x 1.95 mm = 3.90 mm
One nickel = 1 x 1.95 mm = 1.95 mm
To find the combined height of all three groups, we can add the individual heights:
5.85 mm + 3.90 mm + 1.95 mm = 11.70 mm
Therefore, the combined height of 3 nickels, 2 nickels, and 1 nickel is 11.70 mm.