Tolong yang No 41 pakai jalan beserta penjelasannya besok dikumpul tolong dibantu
Dzakwaan
Luas Permukaan Balok = ( 2 x L.Alas ) + ( K.alas x Tinggi ) = ( 2 x P x L ) + ( ( 2 x (P+L)) x Tinggi ) = ( 2 x 20 x 18 ) + ( ( 2 x (20+18)) x 15 ) = ( 40 x 18 ) + ( ( 2 x 38) x 15 ) = 720 Cm² + ( 76 x 15 ) = 720 + 1140 = 1860 Cm²
Banyak karton = Luas Permukaan balok / Luas Karton = 1860 Cm² / ( 20 x 31 ) = 1860 / 620 = 3 Lembar (A)
= ( 2 x P x L ) + ( ( 2 x (P+L)) x Tinggi )
= ( 2 x 20 x 18 ) + ( ( 2 x (20+18)) x 15 )
= ( 40 x 18 ) + ( ( 2 x 38) x 15 )
= 720 Cm² + ( 76 x 15 )
= 720 + 1140
= 1860 Cm²
Banyak karton = Luas Permukaan balok / Luas Karton
= 1860 Cm² / ( 20 x 31 )
= 1860 / 620
= 3 Lembar (A)