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52 = 4S
S =
S = 13
L = S x S
L = 13 x 13
L = 169
b. K = 60 C. K = 128
S = 15 S = 32
L = 225 L = 1024
Luasnya = RxRx6=13x13x6=1014 cm²
2. K=60 --> rusuknya R=K/4=60/4=15 cm
Luasnya =RxRx6=15x15x6=1350 cm²
3. K=128 --> rusuknya R=K/4=128/4=32 cm
Luasnya =RxRx6=32x32x6=6144 cm²
Beri bintang ya.