b = 3a/4
semiperimetro p = 98/2 = 49
49 = a+b = a+3a/4 = 7a/4
a = 49/7*4 = 28 cm
b = 28*3/4 = 21 cm
diagonale di base d = 7√4^2+3^2 = 7*5 = 35 cm
altezza h = √D^2-d^2 = √43,75^2-35^2 = 26,25 cm
semiperm.=98/2=49 49/(3+4)=7 7*3=21=a 7*4=28=b h=radquadr. 43.75^2-21^2-28^2=26,25cm