Răspuns :
a) 90cm×118cm= 10 620 cm²
b) 45cm×2 =90 cm²
c) 35cm ×20cm = 700 cm²
d) 19cm ×2 = 38cm²
a) arie dreptunghi= l*L=90*180=16200
b)arie patrat= l^2= 45^2 = 2025
c) l=35-15=20
A=L*l= 35*20= 700
d) 12+7=19=l
A=l^2= 19^2=361
a) 90cm×118cm= 10 620 cm²
b) 45cm×2 =90 cm²
c) 35cm ×20cm = 700 cm²
d) 19cm ×2 = 38cm²
a) arie dreptunghi= l*L=90*180=16200
b)arie patrat= l^2= 45^2 = 2025
c) l=35-15=20
A=L*l= 35*20= 700
d) 12+7=19=l
A=l^2= 19^2=361