AB = 20 cm
BC = 4 cm
CD = 18 cm
L segitiga ABD
= 1/2 × AB × CD
= 1/2 × 20 × 18
= 180 cm^2 (C)
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= 1/2 x alas x tinggi
= 1/2 x AB x CD
= 1/2 x 20 x 18
= 180 cm²
AB = 20 cm
BC = 4 cm
CD = 18 cm
L segitiga ABD
= 1/2 × AB × CD
= 1/2 × 20 × 18
= 180 cm^2 (C)