Sebuah slidde berukuran panjang 5 cm dan lebar 4 cm. bila lebar bayangan slide pada layar bioskop 6 meter, maka luas bayangan slide pada layar bioskop adalah?
tolong di jawab ya :)
wuri99
Panjang slidde = ps = 5 lebar slidde = ls = 4 panjang bayangan = pb = ? lebar bayangan = lb = 6 ⇔ ps/pb = ls/lb = 5/pb = 4/6 = 4 x pb = 5 x 6 = 4 x pb = 30 = pb = 30/ 4 =7.5
lebar slidde = ls = 4
panjang bayangan = pb = ?
lebar bayangan = lb = 6
⇔ ps/pb = ls/lb
= 5/pb = 4/6
= 4 x pb = 5 x 6
= 4 x pb = 30
= pb = 30/ 4 =7.5
⇔luas bayangan = pb x lb
= 7.5 x 6 = 45