Tolong jawab ya temen2 aku lagi bingung nih.. 1. Dik : limas belah ketupat.kelilin alas 40 cm,salah satu diagonalnya 12 cm,volume 160 cm Dit : berapa tinggi limasnya? jawab ya teman2! terimakasih..
magica
1. cari diagonal yg lain = √10²-6² = √100-36 = √64 = 8 cm x 2 = 16 cm 2. volume = 1/3 X luas alas x tinggi 160 = 1/3 x 1/2 x 16 x 12 x t 160 = 32t tinggi = 160/32 = 5 cm
azmiintans
1. hitung diagonal yang lain s = 40/4 = 10 cm phytagoras = 10, . . ., 6(kenapa 6? karena diagonalnya harus dibagi 2 dulu) phytagoras = 10 (5x3), 8 (4x3), 6 (6x3) > tryple phytagoras 3, 4, 5 d2 = 8x2 = 16 cm
2. hitung tinggi limas Vlimas = Lalas x t x 1/3 Vlimas = d1 x d2 x 1/2 x t x 1/3 160 = 12 x 16 x 1/2 x t x 1/3 160 = 96 x t x 1/3 160 = 32t t = 160/32 t = 5 cm
2. volume = 1/3 X luas alas x tinggi
160 = 1/3 x 1/2 x 16 x 12 x t
160 = 32t
tinggi = 160/32 = 5 cm
s = 40/4 = 10 cm
phytagoras = 10, . . ., 6(kenapa 6? karena diagonalnya harus dibagi 2 dulu)
phytagoras = 10 (5x3), 8 (4x3), 6 (6x3) > tryple phytagoras 3, 4, 5
d2 = 8x2 = 16 cm
2. hitung tinggi limas
Vlimas = Lalas x t x 1/3
Vlimas = d1 x d2 x 1/2 x t x 1/3
160 = 12 x 16 x 1/2 x t x 1/3
160 = 96 x t x 1/3
160 = 32t
t = 160/32
t = 5 cm
jadi, tinggi limasnya 5 cm :):)