tolong bantu!!!!!!!!!!!!

10) a x t / 2 = 40 x 37 / 2 = 1.480 / 2 = 740 D

8.
L = d1 × d2 / 2
L = 39 × 32 / 2
L = 39 × 16
L = 624 cm²
Jawabannya A

9.
L1 + L2 = (12×12) + (18×6) = 144+ 108 = 252 cm²
Jawabannya benar B

10.
L = a × t / 2
L = 40 × 37 / 2
L = 20 × 37
L = 740 m²
Jawabannya D

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