Let Δ ABC ~ Δ DEF and their areas be, respectively, 64 cm2 and 121 cm2. If EF = 15.4 cm, find BC
It is given that,
Δ ABC ~ Δ DEF
Therefore,
= (
2 = (
2 = (
)2
Given:
EF = 15.4 cm
ar (ΔABC) = 64cm2
ar (ΔDEF) = 121 cm2
Hence,
= (
2
(
= (
)
BC = (
)
BC = 8 * 1.4 = 11.2 cm
4