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An engineer draws two concentric circles on a blueprint. If the diameter of the outer circle is 6 centimeters greater than the diameter of the inner circle, how much greater, in centimeters, is the circumference of the outer circle than the circumference of the inner circle?
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If a sphere is inscribed in a cube, what is the ratio of their volumes (sphere to cube)?
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If a cube is inscribed in a sphere whose volume is 36π, what is the volume of the cube?
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The recreation director at a local youth club surveyed the members to determine interest in two activities-a hiking trip and a softball game. Of the members surveyed, 60 percent were interested in the hiking trip and 75 percent were interested in the softball game. Of those who were interested in the softball game, $$\frac{2}{3}$$ were also interested in the hiking trip. What percent of the members surveyed were not interested in either of the two activities?
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What`s the percentage of water on Earth?
_____ %
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Of all waters, ocean takes up about 97% of Earth`s water, what`s the area of Pacific Ocean?
Give your answer to the nearest whole million.
_____ million ($$mi^{2}$$)
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Lake Pontcnartrain has area 2,967,000 (m$$i^{2}$$), what percentage is it compared to of the Pacific Ocean?
Give your answer to the nearest 0.1 percent.
_____ %
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The top surface of a certain 1-inch-thick oak board is 8 inches wide and has an area of 960 square inches. What is the price of this board? (1 foot=12 inches)
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For the 6-inch-wide boards listed, which of the following is closest to the ratio of the price per linear foot of the least expensive type of board to the price per linear foot of the most expensive type of board?
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The price of one maple board that is 8 inches wide and n feet long is $1.50 less than the price of 2 maple boards that are each 4 inches wide and n feet long. What is the value of n?
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For the programming languages shown, the ratio of the greatest number of job postings in 2018 to the least number of job postings in 2018 was closest to which of the following?
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For 2017, let M be the median number of job postings for the programming languages shown and let P be the median number of job postings for the programming languages shown except for PHP. What is the value of P-M?
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