Question

16,
ABC Ane and their areas he respectively, 64 cm and 11 en​

Answer 1

Question

∆ ABC ~∆DEF and their areas are respectively 64cm2 and 121cm2 if EF=15.4cm then find BC

Step-by-step explanation:

∆ABC~∆DEF...,..........given

Now,

By similar triangle theorem we get,

∆ABC2 /∆ DEF2 = BC2 / EF2

64/121 = BC2/(15.4)2

By taking square roots of both sides,

8/11= BC/15.4

By cross multiplication,

(15.4×8)/11 = BC

BC=11.2

therefore value of BC is 11.2

Answer 2

Step-by-step explanation:

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