Question

Ajutoooor 2 , 3 plzzzz

Answer 1

2)

a) 1,2dm = 12cm

Aria =  8·12/2 = 8·6 = 48cm²

b) Aria =  (c₁·c₂)/2 = 6·10/2 = 3·10 = 30 cm²

c) Aria = (b·h)/2 = 5·3/2 = 15/2= 7,5 cm²

3)  a)

Aria = AC·BE / 2 = 8·9/2 = 3·9 = 27 cm²

Aria = BC·AD/2 ⇒ 27 = BC·8/2 ⇒ 27 = BC·4 ⇒ BC = 27/4 = 6,75 cm

Answer 2

Rezolvarea este anexata !
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