Help on Math Questions

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1

<p>Okay so these questions I'm not really understanding:</p>

<p>11- A circular piece of cardboard is cut in half along a diameter. If the diameter is 12 inches, what is the perimeter, in inches, of one of the semicircular piece? (I'll substitue 3.14 for the pie sign)</p>

<p>A- (3.14)6+6
B- (3.14)6+12
C- (3.14)12+6
D-(3.14)12+12
E-(3.14)12+24</p>

<p>I thought the way to solve the problem was to just find the circumference and then dived it by two but obviously not and Idk what else to do.</p>

<p>12- So I can't put the figure up but here is the pattern</p>

<p>RYGWBRYG YGWB</p>

<p>The figure above shows the remaining pieces of the paper chain from which a section has been removed. The first link of the original chain was red and the colors of the links formed the repeating pattern (RYGWB) from left to right. Which of the following could be the number of links in the section that was removed?</p>

<p>A-60
B-61
C-62
D-63
E-64</p>

<p>Please help you guys :)</p>

2

<h1>11. Circumference = 2(pi)(radius);</h1>

<p>Perimeter of semi-circle = (pi)(radius) + (diameter);
For this given circle:
radius = 6;
diameter = 12;
Plug those back into the equation.
Perimeter = (pi)(6) + 12
Answer choice B is correct.</p>

<h1>12. Think about the pattern.</h1>

<p>/RYGWB/RYG–/ (removed segment) /-YGWB/
Note there are three pieces (denoted “-”) that are removed from the pattern.
The number of removed pieces must then be three greater than a multiple of 5.
The only answer choice that fulfills this criterion is (D) 63.</p>