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Fatima Ziemann ∙
The length of arc ACB is 57.2.
55 = 40%
x = 100%
x = (55x100) ÷ 40
x = 137.5
41.87
To do this problem, you set up a proportion: 50 percent of 100 is equal to what (x) percent of 70? It should look like this:
50/100 = x/70
To solve this problem, divide 50 by 100:
.5 = x/70
To finish the equation, times both sides by 70:
(.5)(70) = (70)(x/70) [The x70 and /70 cancel each other out]
35 = x
So, 50% of 70 is 35.
55
70
5.23
45.33
32 degrees
30 degrees
21 degrees
40
310
30
z = 0.5244, approx.
Find the area of the shaded sector. radius of 3 ...A+ = 7.07
100
120 x 130 = 15600
88 x 1.78 = (88 x 178)/100 = 15664/100 = 156.64
A+ = 90
20 is the answer A+
The 3rd arc of the circle: 360-120-130 = 110 degrees