check the picture below.
the line QS is just a flat-line and therefore it has 180° on either side, so the angle QPR is 57°, as you see there, and since we know the diameter is 20, that simply means the radius of the circle is 10.
![\bf \textit{arc's length}\\\\ s=\cfrac{\theta \pi r}{180}~~ \begin{cases} r=radius\\ \theta =angle~in\\ \qquad degrees\\ ------\\ r=10\\ \theta =57 \end{cases}\implies s=\cfrac{(57)(\pi )(10)}{180}\implies s=\cfrac{19\pi }{6}](https://tex.z-dn.net/?f=%20%5Cbf%20%5Ctextit%7Barc%27s%20length%7D%5C%5C%5C%5C%20s%3D%5Ccfrac%7B%5Ctheta%20%5Cpi%20r%7D%7B180%7D~~%20%5Cbegin%7Bcases%7D%20r%3Dradius%5C%5C%20%5Ctheta%20%3Dangle~in%5C%5C%20%5Cqquad%20degrees%5C%5C%20------%5C%5C%20r%3D10%5C%5C%20%5Ctheta%20%3D57%20%5Cend%7Bcases%7D%5Cimplies%20s%3D%5Ccfrac%7B%2857%29%28%5Cpi%20%29%2810%29%7D%7B180%7D%5Cimplies%20s%3D%5Ccfrac%7B19%5Cpi%20%7D%7B6%7D%20)
Answer:
7 + 7 = 14(given lengths)
34(total length) - 14(given length) = 20
20 divided by 2(2 missing slots) = 10
Answer:
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NO answering with links !!!
1) ten subtracted from the product of a number and -3 is 29
2) the difference between a number and nine , divided by 4 , is -7