Kll = 2 (p+l)48 = 2 (4+l+l)48 = 8+4l4 l = 48 -8l = 40:4 = 1048 = 2 (p+l)48 =2 (p + 10)48 = 2p +202p = 48 - 20p = 28 : 2 = 14luas = p.l 10 x 14 = 140 cm^2 ((l+4)+l )x 2 = 482l+4 =24 2l = 20 l : 10p :10+4 :14 luas 10x14 = 140 |
Kll = 2 (p+l)48 = 2 (4+l+l)48 = 8+4l4 l = 48 -8l = 40:4 = 1048 = 2 (p+l)48 =2 (p + 10)48 = 2p +202p = 48 - 20p = 28 : 2 = 14luas = p.l 10 x 14 = 140 cm^2
((l+4)+l )x 2 = 482l+4 =24 2l = 20 l : 10p :10+4 :14 luas 10x14 = 140 |