I'm sorry, I don't understand the question?
Answer:
It is one of the pie charts.
Cross multiply the fractions as in 20 times D and 13 times 60 and the problem will be 20d = 780. Here you can divide 780 by 20 and the answer is what D equals to.
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Answer:
x=72
y=54
Step-by-step explanation:
1st question. y=54 because it is a bisector of the 108 degree angles. (a polygon's interior angles add to number of sides minus 2 times 180)
There are two ys, so they add up to 108. A triangle's interior angles add to 180. 180-108 =72 x=72
2nd question, x is 72 ( it says x is the same measure) so 180-72=2y.
y still equals 54
It is one fourth of a whole circle. So, you can find the area of the whole circle and then divide by 4 to find the area of your quarter circle. You know that the area of a whole circle is found by using the formula A = pi * r^2, where you square your radius and multiply it by pi.