Jawabanmu

2014-04-01T13:42:36+07:00
Diagonal sisi alas = akar dari 8^2 + 6^2 = 10 cm rusuk tegak= akardari 12^2 + 5^2 = 13 cm 4 × rusuk tegak + 2 × 8 + 2 × 6 = 4×13 + 16 + 12= 52+28= 80 cm 1meter = 100 cm sisanya = 100-80= 20 cm