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bangun 1 = persegi panjang

L = P × L
L = 24 × 14 = 336 cm²

bangun 2 dan 3 = trapesium

L = JSS × T : 2
L = 10 + 16 = 26 × 3 = 78 : 2 = 39 cm + 39 = 78 cm²

L¹ - L² dan L³ = 336 - 78 = 258 cm ²

maaf klo salah