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24. (a+b) * t/2 = (9 + 27) * 9/2
= 36 * 4.5
= 162
24.diket= s persegi=alas segitiga= tinggi segitiga=9cm
Ditanya= Ltrapesium=
Ltrapesium= jumlah sisi sejajar ×tinggi ÷ 2
= ((9+(9+9+9)×9) : 2
= (36×9) :2
= B.162cm