Answer:
[tex]3GR=27[/tex]
Step-by-step explanation:
Since area of rectangle BCND is given as 90 and one of its side is 10, the other side MUST be 9.
[tex]CN*BC=90\\CN*10=90\\CN=9[/tex]
In Rhombus CGNR, CN and GR are congruent (property of Rhombus). Hence GR = 9 as well.
Thus 3GR = 3(9) = 27
First answer choice is right.
