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2 x (3 x 10) + 2 x (3 x 18) + 2 x (13 x 18)

ie 60 + 108 + 468, a total of 636 squinches

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Q: A rectangular box is 3 inches high 10 inches wide and 18 inches long what is the surface area of the box?
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If the length of a rectangular picture is 2 feet longer than the width what is the length according to the golden ratio?

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How do you calculate the square feet of the area?

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The surface area of a rectangular solid that is 8 inches long16 inches wide and 4 inches high?

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