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primary 6 | Maths
| Measurement

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5 equal longer sides + 5 equal shorter sides = 150cm

You can group them into 5 equal sets, each having 1 shorter and 1 longer side.

So 5 sets = 150cm

1 set = 150cm ÷ 5 = 30cm

Notice that ABCFE is just 1 longer + 1 shorter side

So ABCFE = 30cm

You don't have to assume any lengths to solve the question. And you shouldn't do so as no lengths are given. It will be considered mathematically incorrect.

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