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a = 12 cm
b = 11 cm
Ditan : h?
Jawab :
Ltrapesium = 1/2 x (a+b) x h
112 = 1/2 x (12+11) x h
112 = 1/2 x 23 x h
h = 112 / (1/2 x 23)
h = 9,74 cm
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