Question
Norah wants to buy a mirror so that she can check on her appearance from top to toe before she goes off to work. If Norah is $1.64 \mathrm{~m}$ tall, how tall a mirror does she need?
Step 1
First, we need to consider that Norah will be standing at some distance from the mirror, not right up against it. This means that the mirror doesn't need to be as tall as her full height. Show more…
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