Amery drives 50 miles in one hour. how many miles does he drive in 2.25 hours

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The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm