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Ksju [112]
3 years ago
15

B) When heated an iron bar expands by 0.2%. If the increase in length is 1 cm,

Mathematics
1 answer:
prisoha [69]3 years ago
3 0

Simple algebra.

When we convert this to an equation we get: 0.2% of something is equal to 1 unit.

So here's the equation: 0.02x = 1

After we transpose 0.02, the equation become: x = \frac{1}{0.02}.

Divide 1 with 0.02 and you get 50.

So the length of the original bar is 50 cm. :D

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<u><em>The question in English is</em></u>

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