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 Question from stephon, a student: A rectangle has a length of 4cm and a width of 8cm. If this rectangle is reduced to 90% of its original size what will be the new length

Hi Stephon,

Is this the way the problem is stated? It is somewhat ambiguous. Does the statement "this rectangle is reduced to 90% of its original size" mean the length and width are reduced to 90% of their original values or the area is reduced to 90% of its original value? I am going to assume it means the length and width are reduced to 90% of their original values.

90% is another way of writing $\frac{90}{100}$ so 90% of the length is

$\frac{90}{100} \times 4 \mbox{ cm }$

I hope this helps,
Penny

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