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Huilan is years younger than Thomas. The sum of their ages is 81. What is Thomas's age?
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You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?
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Mathematics, 21.06.2019 22:50
Which best explains why this triangle is or is not a right triangle ?
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Huilan is years younger than Thomas. The sum of their ages is 81. What is Thomas's age?...
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