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= 22/7.3,5(15,5.3,5)
= 22/7.3,5.19
= 22.0,5.19.2
= 418 cm²
LP belahan bola = 1/2.4πr²
= 1/2.4.22/7.3,5.3,5
= 2.22.3,5.0,5
= 77 cm²
Jadi, luas permukaan lampion adlh 495 cm²