let ∆ABC ~ ∆DBC and there areas be respectively, 64 CM square and 121 CM square if EF= 15.4 cm find BC
tanmoyvestige:
NCERT
set 3 ???
yup
I also got set 3
questions no 6
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11.2
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This question was asked in today's cbse class 10 Maths exam and it's answer is 11.2 cm...
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As ∆ABCsimilar to ∆DEF their areas ratio will be equal to ratio of their sides i.e.64/121=EFsquare/BCsquare
8/11=15.4/BC
BC=21.175
8/11=15.4/BC
BC=21.175
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