Question

dreptungchi are diagonala de 13 cm si una dintre laturile de 5 cm sa se afle perimetryl dreptunchiului

Answer 1

L^2=d^2-l^2
L^2= 13^2-5^2
L^2=169-25
L^2=144
L=12cm
P=2*l+2*L=2*5+2*12=10+24=34cm

Answer 2

$L^{2}= d^{2}- l^{2} \\ L^{2}=13^2-5^2 \\ L^{2}=169-25 \\ L^{2}=144 \\ L=12 \\ P=2*(L+l)=2*(12+5)=2*17=34cm$