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jumlah garis sejajar (1)

= 11 + 17

= 28 cm

jumlah garis sejajar (2)

= 7 + 11

= 18 cm

L1 = 1/2 × jumlah garis sejajar × tinggi

L1 = 1/2 × 28 × 7

L1 = 14 × 7

L1 = 98 cm^2

L2 = 1/2 × jumlah garis sejajar × tinggi

L2 = 1/2 × 18 × 7

L2 = 9 × 7

L2 = 63 cm^2

jadi luas seluruhnya = 98 cm^2 + 63 cm^2

………………………………….= 161 cm^2