Triangle is similar to triangle

MATHEMATICS · Subjective · CBSE · Mathematics · Triangles · Triangles

Problem

Triangle ABCABC is similar to triangle A′B′C′A'B'C'. If AB=7 cmAB=7\,\text{cm}, A′B′=21 cmA'B'=21\,\text{cm} and AC=9 cmAC=9\,\text{cm}, calculate A′C′A'C'.

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