135. Volume of Concrete A culvert is constructed out of large cylindrical shells cast in concrete,...

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135. Volume of Concrete A culvert is constructed out of large cylindrical shells cast in concrete, as shown in the figure. Using the formula for the volume of a cylinder given on the inside front cover of this book, explain why the volume of the cylindrical shell is V = TR²h - Tr²h Factor to show that V = 27. average radius height. thickness Use the "unrolled" diagram to explain why this makes sense geometrically. R | | h . h 135. Volume of Concrete A culvert is constructed out of large cylindrical shells cast in concrete, as shown in the figure. Using the formula for the volume of a cylinder given on the inside front cover of this book, explain why the volume of the cylindrical shell is V = TR²h - Tr²h Factor to show that V = 27. average radius height. thickness Use the "unrolled" diagram to explain why this makes sense geometrically. R | | h . h