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segitiga =0,5 x alas x tinggi
0,5 x (22-8 ) x (20 - 15 )
0,5 x 14 x 5 =35 dm2
330 + 35 = 365 dm2, ndak ada jawaban di pilihan gandanya dek
semoga membantu
= 15 dm × 22 dm
= 330 dm²
L segitiga = 1/2 a × t
= 1/2 14 dm × 5 dm
= 1/2 70 dm
= 35 dm²
L keseluruhan = L pesegi panjang + L segitiga
= 330 dm² + 35 dm²
= 365 dm²
jawabannya ga ada dipilihan