Răspuns:
1 a) P=7*4=28
A=7*7=49cm2
PATRAT
b) P=10*2+7*2=34
A=10*7=70cm2
DREPTUNGHI
c) S=7*8+10*4=96cm
2) l= 144/12=12
A=12*12=144cm2
3) l=[tex]\sqrt{64}[/tex]=8cm
d=[tex]\sqrt{8^{2}+15^{2} }[/tex]=[tex]\sqrt{289}[/tex]=17cm
4)AB=36/6=6cm
A ABB'A'=6*6=36cm2
Explicație pas cu pas:
