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09-05-2021
Mathematics

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15. Triangles ABC and DEF are similar.
Work out the length of BC.

15 Triangles ABC and DEF are similarWork out the length of BC class=

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09-05-2021

Answer:

10cm

Step-by-step explanation:

Since ABC and DEF are similar, the ratio of their side is always the same.

The ratio here is:

DF/AC = 6/4 = 1.5

Therefore, it means that BC x 1.5 = EF

So:

BC x 1.5 = 15

BC = 15 / 1.5 = 10cm.

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