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Height = 18 cm The base is half as long means as height base = height/2 = 18/2 =9 cm. Area= base*height = 18*9 =162 cm² Area=162 cm²

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Answer:162 Square Centimenters Work: Step:1 Do 18÷2 since the base is half as long as the height which would equal 9. Then, do 18×9=162 Square Centimeters

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