Perbandingan balok adalah Panjang:Lebar:Tinggi = 5:2:1 jika luas permukaan 306 tentukan besar volume balok tersebut
magica
Luas permukaan = 2(pl+pt+lt) 306 = 2(5a x 2a + 5a x a + 2a x a) 306 = 2(10a²+5a²+2a²) 306= 2(17a²) 306 = 34a² a² = 9 a=3 panjang = 5 x 3 = 15 cm lebar = 2 x 3 = 6 cm tinggi = 1 x 3= 3 cm volume = p x l x t = 15 x 6 x 3 = 270 cm²
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5dregensleyer
Luas pemukaan Lp = 2 (pxl + pxt + lxt) 306 = 2 (5ax2a + 5axa + 2axa) 306 = 2 (10a² + 5a² + 2a²) 306 = 2 ( 17a²) 306 = 34a² 306/34 = a² 9 = a² √ 9 = a 3 = a panjang = 5 x 3 = 15 lebar = 2 x 3 = 6 tiggi = 1 x 3 = 3 volume balok volum = p xl x t = 15 x 6 x 3 = 270 cm³
306 = 2(5a x 2a + 5a x a + 2a x a)
306 = 2(10a²+5a²+2a²)
306= 2(17a²)
306 = 34a²
a² = 9
a=3
panjang = 5 x 3 = 15 cm
lebar = 2 x 3 = 6 cm
tinggi = 1 x 3= 3 cm
volume = p x l x t = 15 x 6 x 3 = 270 cm²
Lp = 2 (pxl + pxt + lxt)
306 = 2 (5ax2a + 5axa + 2axa)
306 = 2 (10a² + 5a² + 2a²)
306 = 2 ( 17a²)
306 = 34a²
306/34 = a²
9 = a²
√ 9 = a
3 = a
panjang = 5 x 3 = 15
lebar = 2 x 3 = 6
tiggi = 1 x 3 = 3
volume balok
volum = p xl x t
= 15 x 6 x 3
= 270 cm³
jawabnya 270 cm³