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b. s = 60 : 4 = 15 cm, L = 15 x 15 = 225 cm2
c. s = 128 : 4 = 32 cm, L = 32 x 32 = 1024 cm2
s = 52 : 4 = 13
luasnya = sxs = 13x13 = 169 cm2
b. k = 4s = 60
s = 60 : 4 = 15
luas = 15x15 = 225 cm2
c. k= 4s = 128
s = 128 : 4 = 32
luas = 32 x 32 = 1024 cm2