A gold bar is similar in shape to a rectangular prism. A gold bar is approximately 7 in.

2 and 5/8 x 1 and 1/2 in.

If the value of gold is $1142 per​ ounce, about how much is one gold bar​ worth? Use the formula w≈ ​11. 15n, where w is the weight in ounces and n= volume in cubic​ inches, to find the weight in ounces. Explain how you found your answer. \

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