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2 years ago

A 20 cent coin is 1.2 mm thick. What is the value of a pile of 20 cent coins which is 21.6 cm

Mathematics

2 answers:

ehidna [41]2 years ago

6 0

The answer is 18, 20 cent coins. 21.6/1.2 is equal to 18.

NeX [460]2 years ago

3 0

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

= $\boxed{1600\ cents}$

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