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A solid concrete porch consists of 3 steps and a landing. The steps have a tread of 11 in., a rise of 7 in.,
A solid concrete porch consists of 3 steps and a landing. The steps have a tread of 11 in., a rise of 7 in., and a length of 7 ft.; the landing is 6 ft. by 7 ft. How much material was used in its construction? 6' MATHalino.com 7' 11" -7"
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