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panjang TS = 18 ÷ 2 = 9
maka panjang PS :
a² = b² + c²
a² = 12² + 9²
a² = 144 + 81
a = √225
a = 15
Panjang PR = 52 dan PT 12 maka:
TR = 52 -12 = 40
panjang RS:
a² = b² + c²
a² = 40² + 9²
a² = 1600 + 81
a = √1681
a = 41
maka keliling layang - layang:
K = PS + PQ + SR + RQ
K = 15 + 15 + 41 + 41
K = 112 cm