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Verified answer
1.
sisi miring
12 kuadrat + 9 kuadrat = C kuadrat
C = 15
24 + 15 + (9+24+9) + 15 = 96 cm (A)
2.
luas = 270/360 x pi x r x r
= 3/4 x 22/7 x 10,5 x 10,5
= 259,875 cm2