Question

Ajutati mă urgent!!!!

Answer 1

a) aria=(latura * înălțimea)/2
12=(latura * 6)/2
latura *6=12*2
latura=24/6=4cm

b)arie triunghi dreptunghic = (cateta1 * cateta2)/2
10=5*c2/2
5*c2=10*2
5*c2=20
c2=20/5
c2=4dm

c)arie triunghi dreptunghic isoscel = (cateta^2)/2
18=c^2/2
c^2=18*2
c^2=36
c=6m

Answer 2

                 bxh
a)aria Δ=-----------
                    2

        bx6
12=-----------  ⇒bx6=12x2    ⇒b=24÷6   ⇒b=4 cm
          2

b)
               cxc
aria Δ=-----------
                 2

          5xc
10=-----------     ⇔ 5xc=10x2    ⇔5xc=20  ⇔  c=20÷5    ⇔c=4
          2

c)                     c·c
        aria Δ=----------- =18  ⇔c²=18·2    ⇔c=6
                        2