Chris made a solid by joining two identical rectangular prisms as picture below. The overall dimensions of the composite solid are 20 centimeters (cm) by 18 centimeters by 15 centimeters.
What is the surface area in square centimeters, of a single prism?

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Chris made a solid by joining two identical rectangular prisms as picture below The overall dimensions of the composite solid are 20 centimeters cm by 18 centim class=