Odpowiedź :
c^2=a^2+b^2
c^2= 225+400
c^2= 625 / √
c=25
lADl = 15*1/2= 7 1/2
lAEl= 25 * 1/2 = 12 1/2
lDEl=
c^2= a^2+ b^2
156,25= 56, 25 + b^2
b^2= 156,25- 56,25
b^2= 100/√
b= 10
c^2= 225+400
c^2= 625 / √
c=25
lADl = 15*1/2= 7 1/2
lAEl= 25 * 1/2 = 12 1/2
lDEl=
c^2= a^2+ b^2
156,25= 56, 25 + b^2
b^2= 156,25- 56,25
b^2= 100/√
b= 10