zahraaryokoLuas Permukaan Balok ( 2 x p x l ) + ( 2 x p x t ) + ( 2 x l x t ) ( 2 x 20 x 10 ) + ( 2 x 20 x 25 ) + ( 2 x 10 x 25 ) 400 + 1000 + 500 1900 cm²
zahraaryoko
yang dtanayakan luas permukaan balok :) bukan volume balok\
dianiskarina
Luas permukaan balok = 2 (pl + pt + lt ) = 2 (20 cm x 10 cm ) + (20 cm x 25 cm ) + (10 cm x 25 cm ) = 2 (200 cm ) + (500 cm) + (250 cm) = 2 (950) = 1.900 cm
( 2 x p x l ) + ( 2 x p x t ) + ( 2 x l x t )
( 2 x 20 x 10 ) + ( 2 x 20 x 25 ) + ( 2 x 10 x 25 )
400 + 1000 + 500
1900 cm²