Question

7. triangle DEF is similar to triangle XYZ if 9 ar (DEF) = ar (XYZ) and DE=1.5cm then XY=____ cms
(2,3,4.5, 13.5)​

Answer 1

Answer:

ar(DEF)÷ar(XYZ) = 1/9 = (DE/XY)²

DE/XY = 1/3

1.5/XY = 1/3

XY = 1.5×3 = 4.5