Q10 of 62 Page 193

Triangles ABC and DEF are similar. If their areas are 100 cm2 and 49 cm2 respectively and BC is 8.2 cm then EF =

Given: ar(ABC) = 100 cm2, ar(DEF) = 49 cm2 and BC = 8.2 cm


Areas of two similar triangles are in the ratio 100:49


We know that the ratio of the areas of two similar triangles is equal to the ratio of the squares of


their corresponding sides



Putting the values



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