Answer:
A=36
Explanation:
Hi love ,
so we now that the are of a triangle is : 1/2bh
the smaller triangle shows that : 9 = 1/2b*3
so b =6
and if the 3 became 6 then 6 will become 12
base of the smaller triangle = 6
base of the larger triangle = 12
Area of Larger triangle = 1/2 * 12*6
= 1/2*72 = 36
A=36