The radius is increased by \sqrt(2) times, so b must be the missing choice that we're looking for. The formula for sphere's surface area is 4*pi*r^2. When r is increased to be \sqrt(2)*r, the new surface area becomes 4*pi*(2*r^2)=8*pi*(r^2), doubling the original surface area.
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16 (2x); 5:12 (2x), 18 (2x); 7:8; 8:22, 28, 32 (2x), 37; 9:5, 6, 7, 17, 33; 10:4, 11, 12 (2x), 13, 16, 18; 11:26, 32 (2x), 36; 12:3, 4, 17
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Step-by-step explanation:
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The probability is just 1/2 that the disc will result with the white side landing up.
There are two sides to the disc. If they are equally likely to happen, then the chance of either side is 1/2. It does not matter which number the flip is.
