almaga1979orfvwo
04.12.2019 •
Mathematics
1.this figure shows circle o with diameter qs . mrsq=310° what is the measure of ∠roq ? enter your answer in the box.
2.chord ac intersects chord bd at point p in circle z.ap=3.5 in.
dp=4 in.
pc=6 in. what is bp? 3. what is the length of st? enter your answer as a decimal in the box. round your final answer to the nearest hundredth.4.quadrilateral abcd is inscribed in circle o. what is m∠b ? 5. a circle has a radius of 6 in.what is the exact length of an arc formed by a central angle measuring 45°? enter your answer in the box. express your answer using π . no picture for this one6. which explanation justifies how the area of a sector of a circle is derived? the sector of a circle is a fractional part of the circle. determine the fraction of the circle that the sector represents. multiply this fraction by the area of the entire circle.find how many sector pieces fit in a circle. divide this number by the total degrees in a circle. then multiply the quotient by the diameter of the circle.determine the percent of the sector of the circle divided by the degrees in a circle. then find the number of triangles within a circle. divide the two numbers and multiply by the area of the circle.the sector of a circle represents a part of a whole circle. determine how many sections of the sectors will fit in the circle. multiply this number by 180 and then multiply it by the area of the circle.
7. a circle has a radius of 8 ft.what is the area of the sector formed by a central angle measuring 5π4 radians? use 3.14 for pi.enter your answer as a decimal in the box. no picture
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Ответ:
For #1, the major arc is 310, so the minor arc is only 50. The central able of ROQ is equal to the measure of it's arc. So it is 50.
For #2, when you have 2 chords the products of the divided segments on each cord are equal. So we can write and solve the equation below.
4x = 3.5(6)
4x = 21
x = 5.25
Ответ: