Which statement is true for an equilateral triangle?
2 answers:
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Ok, so you use cross-multiplication.
5 × 9 = 21r
45 = 21r
divide both sides by 21
45/21 = r
Simplify
= r
Have a good day!
5 × 9 = 21r
45 = 21r
divide both sides by 21
45/21 = r
Simplify
Have a good day!
We know that to find the area of the entire circle, we are going to use the equation:
And we know that the diameter is 12. To find the radius, we divide the diameter by 2, so 12/2 = 6. So the radius is 6.
Now we can use this radius in the equation:
Since all of the angles of each section are equal, we can assume that each of the sections has an equal area. There are 5 sections, so we need to divide by 5 to find the area of each section:
Each section has an area of or, using 3.14 for pi,
.
Since we are told to find the area of the blue sections, we know that there are 2 sections that are blue. So we need to multiply the area of each section by 2, to find the area of two of the sections:
Therefore, the answer is C) 45.2 .