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B.32x7,5=240cm2
32-8 = 24 cm ÷ 2
AB = 12 cm
CD = 12 cm
A) panjang BE = TINGGI = 15cm
luas∆BCE = alas × tinggi ÷ 2
60 = 8 × T÷2
120 = 8T
T = 15 cm
b) luas ∆ ADE = ALAS × tinggi ÷ 2
= 32 × 15
=240 cm²