Question

if the area of rhombus is k times the area of a rectangle contained by its diagonals , then k is equal to ...

Answer 1

okay check this one,

ar(rhoumbus) = 1/2 x d1 x d2 ~ i

we say that, d1=l d2=b

ar(rectangle) = l x b ~ ii

from i ii

ar(rhoubus) = 1/2 x l x b

i.e, ar(rhoumbus) = 1/2 ar(rectangle)