1. a. K = 4 x S = 4 x 18 = 72 cm
1. b. K = 4 x S = 4 x 20 = 80 cm
1. c. K = 4 x S = 4 x 22 = 88 cm
1. d. K = 4 x S = 4 x 25 = 100 cm
1. e. K = 4 x S = 4 x 35 = 140 cm
1. f. K = 4 x S = 4 x 43 = 172 cm
2.a. S= K: 4 = 100 : 4 = 25 cm
2.b. S= K: 4= 132 : 4 = 33 cm
2.c. S=K: 4 = 92 : 4 = 23 cm
Pembahasan No 3
4. S1= 108: 4 = 27 cm, S2= 144: 4= 36 cm jadi selisihnya 36-27 = 9 cm
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