Question

Calculati aria unui romb cu diagonala mica de 12 cm, iar diagonala mare tripla acesteia.

Answer 1

d=12 cm
D=d*3
D=12*3
D=36

A=$\frac{D*d}{2}$ 
A=$\frac{12*36}{2}$
A=$\frac{432}{2}$
A=216 $cm^{2}$