In the following problems, compute the radius in inches of the following circles drawn on a computer screen. Two points, with coordinates measured in pixels, define each circle. The first point marks the center of the circle and the second marks a point on the circumference. The radius is the distance between the two points. Assume that a pixel is a dot with diameter of 0.28 millimeters.

(650, 350) and (350, 650)

Radius is distance between center (xi, yi) and point on the circumference (x2, y2). Distance (r) can be found using the Pythagorean equation:


![14984|336x87](upload://arfs3K4y5qs0foyOqOjkGhTzJUv.jpeg)
r = 412.3106 pixels
r = 412.3106 (pixels)* 0.28 (mm / pixel) = 115.4470 mm
r = 115.4470 (mm) * 1/1000 (meter / mm) * 39.37 (inches / meter) r = 4.5451 (inches)
Radius is 4.55 inches (rounded to 2 places)

Computer Science & Information Technology

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1. STL set operations are essentially insert, delete, and the query, “Is it there?”. 2. A Map is a function given as a set of ordered pairs. The first is the key that has to have ordering and the second is any type. The position of a pair in the set is determined by the ordering on the keys. 3. The set container implements only iterator. 4. Order of magnitude estimates don’t work well if we are interested in behavior for small data sets. 5. Nonmodifying sequence algorithms do not change the elements in the containers they work on.

Computer Science & Information Technology

A chart that shows each data point in proportion to the whole data series.

What will be an ideal response?

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Which of the following masks can be used to flip bit 3?

A. 0x03 B. 0x04 C. 0xF3 D. 0xF4 E. 0xF7

Computer Science & Information Technology

Value Watt lightbulbs have an average lifetime of 720 hours of use before burning out, with a standard deviation of 90 hours, according to the quality control department. Assume these times are normally distributed. What percent of bulbs will last between 720 and 810 hours?

A. 47.5% B. 34.1% C. 15.9% D. 50.0% E. 13.5%

Computer Science & Information Technology