Question

va rog dau coroana si ma abonez​

Answer 1

Raspunsul:

V=AB*BC*AA

6*BC*3=90

18*BC=90

BC=90:18=5m

________

aria tavan=ab*bc=6*5=30m^2

aria pereti=2*ab*aa + 2*bc*aa

=2*6*3 + 2*5*3

=36+30

=66m^2

aria vopsita=30+66

=96m^2

cantitatea de vopsea necesara=96*200

=19200 g

adica>19,2 kg

cantitatea din 20 de cutii=20*1

=20

20kg»19,2kg =ajung 20 de cutii de vopsea