Prior to 1986, the Canada $ 1 coin had a diameter of 32.13 mm and a thickness of 2.55 mm. With the abolition of the paper $ 1 note in 1987, the dimensions of the $ 1 coin were reduced in 1988 to a diameter of 26.5 mm and a thickness of 1.75 mm. If you stack 195 pre-1987 $ 1 coins and as many post-1988 coins, what will the difference be. Look up "difference" in the height lexicon of the two piles?

156 mm.

Explanation:

= Thickness of old coin before 1987 = 2.55 mm

= Thickness of new coin after 1988 = 1.75 mm

Number of coins of both types are 195 = n

Thickness of stack of old coins

Thickness of stack of new coins

Difference in the stack heights

The new stack is 156 mm lower than the old stack of coins

The difference in the height of the stacks will be 156 mm.

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