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K : 4 = s
56 : 4 = s
14 = s
a = t limas
= 24 cm
b = s : 2
= 14 cm : 2
= 7 cm
a² + b² = c²
24² + 7² = c²
576 + 49 = c²
625 = c²
√625 = √c²
25 = c
LP = La + L sisi tegak
= (s × s) + 4(1/2 × a × t segitiga)
= (14 × 14) + 4(1/2 × 12 × 25)
= 196 + 4(6 × 25)
= 196 + 4(150)
= 196 + 600
= 796 cm²