Question

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Answer 1

the area of a rectangle = length * width
given length = cube rt 0f 81 and width = 3^2/3
area = 81^1/3 * 3^2/3
81 can be written as 3^4
area = 3^4/3* 3^2/3 = 3^(4/3 + 2/3) = 3 ^ 6/3 = 3 ^ 2 = 9