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Verified answer
La = s x sLa = 10 cm x 10 cm
La = 100 cm²
t∆ sisi tegak = √5² + 12²
t∆ = √25 + 144
t∆ = √169
t∆ = 13 cm
Luas 4 sisi tegak = 4 x ½ x 13 x 10
Luas 4 sisi tegak = 2 x 130
Luas 4 sisi tegak = 260 cm²
Lp = 100 + 260
Lp = 360 cm²
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