pliss kak bantuin pakai cara!!! jangan asal-asalan
Penjelasan dengan langkah-langkah:
L = 1/2 × (jlh sisi sejajar) × t
324 = 1/2 × (20+(20+9+5)) × t
324 = 1/2 × (20+34) × t
324 = 1/2 × 54 × t
324 = 27 × t
t = 324/27
t = 12 cm (a)
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