Question

ex 9 va rog !!!!!! ```

Answer 1

a) A=Lxl=13,5x10=135 cm patrati
b) A=Lxl=> 192,5=2,5xBC=>BC=192,5/2,5=77 CM
c) A=ABxBC=>98=2BCxBC=>98=2BC PATRAT=>BC PATRAT=49=>BC=7=> AB=14

Crăciun fericit!⛄️

Answer 2

Răspuns:

Explicație pas cu pas:

a)

A = AB*BC = 13,5*10 = 135 cm^2

b)

BC = A : AB = 192,5 : 2,5 = 77 cm

c)

A = AB*BC = 2BC*BC = 2BC^2

BC^2 = A : 2 = 98 : 2 = 49

BC = 7 cm

AB = 2*7 = 14 cm

d)

A = AB*BC = 3/7*BC*BC = 3/7*BC^2

BC^2 = 7A/3 = 7*84/3 = 196

BC = 14 cm

AB = 14*3/7 = 6 cm