5dregensleyer
30.) Lp = 2 ( px l + px t + l x t) = 2 ( 15 x 5 + 15 x 6 + 5 x 6) = 2 ( 75 + 90 + 30 ) = 2 ( 195) = 390 cm²
31.) Lp = (2 x luas alas ) + (kliling alas x t) = ( 2 x 22/7 x 28 x 28 ) + ( 2 x 22/7 x 28 x 50) = ( 44 x 4 x 28 ) + ( 44 x 4 x 50 ) = 4928 + 8800 = 13.728 cm²
= 2 ( 15 x 5 + 15 x 6 + 5 x 6)
= 2 ( 75 + 90 + 30 )
= 2 ( 195)
= 390 cm²
31.) Lp = (2 x luas alas ) + (kliling alas x t)
= ( 2 x 22/7 x 28 x 28 ) + ( 2 x 22/7 x 28 x 50)
= ( 44 x 4 x 28 ) + ( 44 x 4 x 50 )
= 4928 + 8800
= 13.728 cm²