Question

If AABC - ADEF, and A (AABC) = 9
cm?, ACADEF) = 16 cm². If BC = 2.1 cm,
then the measure of EF is?​

Answer 1

Answer:

ΔABC∼ΔDE

ΔABC=16cm^2

ΔDEF=25cm^2

BC=2.3cm

EF=?

Ratio of area is equal to square of ratios of its corresponding sides.

Hence,ΔABC/ΔDEF=(BC/EF)^2

16/25=2.3×2.3/EF^2

EF=√8.265625

∴ EF=2.875cm

Step-by-step explanation:

Hope it helps.