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= ((p * l) - (1/4 * L. prsgi)) + ((s * s) - (1/4 * L. prsgi))
= ((9 * 7) - (1/4 * L. prsgi)) + ((8 * 8) - (1/4 * L. prsgi))
= (63 - (1/4 * 64)) + (64 - (1/4 * 64))
= (63 - 16) + (64 - 16)
= 47 + 48
L. tdk diarsir = 95 cm² (D.)
Luas tidak diasir di persegi = 8 x 8 - 16 = 64 - 16 = 48
Luas tidak diasir di persegi panjang = 9 x 7 - 16 = 63 - 16 = 47
Luas tidak diasir total = 48 + 47 = 95 cm² = (D)