Two mathematically similar frustums have heights of 20cm and 30cm. the surface area of the smaller frustum is 450cm². calculate the surface area of the larger frustum.

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You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.