Question

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Answer 1

BC = 28

Explanation:

Since the triangles are similar then the ratios of corresponding sides are in proportion, that is

`(BC)/(EF)` =
`(AB)/(DE)` ( substitute values )

`(BC)/(7)` =
`(16)/(4)` = 4 ( multiply both sides by 7 to clear the fraction )

BC = 4 × 7 = 28