Risposte

2013-12-16T20:10:39+01:00
2013-12-17T00:34:58+01:00
Perimetro del triangolo equilatero.7+7+7=21cm                                                                  diametro del cerchio =21 cm.                                                                          area del cerchio =(21/2)per (21/2)per 3,14=346,18 cm quadro