Jawaban:
1. luas permukaan kubus = 6×9^2= 6 ×81 = 486 cm2
2. luas permukaan kubus = 6×rusuk ^2
1176 = 6 × rusuk^2
rusuk ^2 = 1176/6
rusuk ^2 = 196
rusuk = √196 = 14 cm
3.volume kubus = sisi x sisi x sisi
6859 = sisi^3
sisi = 3√6859 = 19 cm
luas permukaan kubus = 6×rusuk ^2 = 6 × 19^2 = 722 cm2
4.luas permukaan balok=2 ×( 8×4)+(8×2)+(4×2) = 2 ×(32+16+8) = 112 cm2
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Jawaban:
1. luas permukaan kubus = 6×9^2= 6 ×81 = 486 cm2
2. luas permukaan kubus = 6×rusuk ^2
1176 = 6 × rusuk^2
rusuk ^2 = 1176/6
rusuk ^2 = 196
rusuk = √196 = 14 cm
3.volume kubus = sisi x sisi x sisi
6859 = sisi^3
sisi = 3√6859 = 19 cm
luas permukaan kubus = 6×rusuk ^2 = 6 × 19^2 = 722 cm2
4.luas permukaan balok=2 ×( 8×4)+(8×2)+(4×2) = 2 ×(32+16+8) = 112 cm2
maaf jika salag