Penjelasan dengan langkah-langkah:
nomer 1
A. tinggi balok = 21
v = p x l x t
5292 = 18 x 14 x t
5292 = 252 t
t = 5292/252 = 21t
B. L = 2(pl + PT + lt)
L = 2 ( 252 + 378 + 294 )
L = 2 x 924
L = 1848
nomor 2.
volume = luas alas x tinggi
= (1/2 x 20 x 10√3) x 24
= 2400√3 cm³
luas permukaan = (luas alas x 2) + 3 x luas persegi panjang
= 200√3 + 3 x 20 x 24
= (200√3 + 1440) cm
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Penjelasan dengan langkah-langkah:
nomer 1
A. tinggi balok = 21
v = p x l x t
5292 = 18 x 14 x t
5292 = 252 t
t = 5292/252 = 21t
B. L = 2(pl + PT + lt)
L = 2 ( 252 + 378 + 294 )
L = 2 x 924
L = 1848
nomor 2.
volume = luas alas x tinggi
= (1/2 x 20 x 10√3) x 24
= 2400√3 cm³
luas permukaan = (luas alas x 2) + 3 x luas persegi panjang
= 200√3 + 3 x 20 x 24
= (200√3 + 1440) cm