Question

Kubus mempunyai panjang seluruh rusuk 188cm tentukan

a.panjang rusuk
b.luas permukaan
c.volum
d.panjang diagonal rusuk

Answer 1

A. panjang rusuk = 188/12 = 14 cm
b. Luas permukaan = 6 x r x r = 6 x 14 x 14 = 6 x 196 = 1176 cm
c. V = r x r x r = 14 x 14 x 14 = 2744 cm³
d.panjang diagonasl bidang = r√2 = 14√2 cm

Answer 2

A). Panjang ruauk = 12 x s ...... 188 = 12 x s ... S = 188/12.... = 15,7 cm .... b ) L. Permuikaan = 6 x s².... = 6 x 15,7²..... = 1.478,94 cm².... c ). Volume = s³.... = 15,7³... = 3.869,893 cm³..... d) pankang diagonal rusuk =√ 15,7² + 15,7² = √246.49 + 246.49 =√ 592,98 = 22,20 cm