Answer:
area= 41 cm^2
Step-by-step explanation:
area=5 x 8.2 = 41 cm^2
divide the rhombus in half either way and you have two identical triangles.
area of triangle =0.5 x base x height
double that for the two triangles and you have the area of the rhombus.
If you mean 2x=40 x=20
but if you mean x^2=40 i think its x=80
3.264 x 10^1 hope this helps :)
