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Luas trapesium = 1/2 (a+b) x tinggi
Luas = 1/2 (52+18) x 35 = 1225cm²
luas persegi panjang
= p x l
= 87 x 35
= 3045cm²
total luas = 4270cm²
keliling
= 87 + 35 + 50 + 18 + 35 + 35 + 35
= 295cm