Răspuns :
ROMB, d = 12 cm , diagonala mica
D = d x 3 = 12x3 = 36, D= 36 cm, diagonala mare
A romb = ( D x d) supra 2 = ( 36 + 12 ) supra 2 = 48/2 = 24
= 24 cm²
D = d x 3 = 12x3 = 36, D= 36 cm, diagonala mare
A romb = ( D x d) supra 2 = ( 36 + 12 ) supra 2 = 48/2 = 24
= 24 cm²