A decagon has 10 sides (think decade and decathlon). From the center of the decagon we draw the radii and in doing so we take the area of the decagon and divide it into 10 congruent Triangles.
The angles around the center add up to 360 because they form a circle and since there are 10, they each measure 36 degrees. So the answer to the first part (the angle between the radii) is 36 degrees.
Each of these triangles has two equal sides (both radii) so is Isosceles. That means that the base angles are congruent. So the two angles that are left in each triangle must measure the same. Since the angles in a triangle add up to 180 degrees, we know that the two remaining angles are together equal to 180-36=144 degrees. Since they are equal in measure they each measure 72 degrees.
Thus the answer to the second part, trhe measure of the angle between a radius and the side of the polygon is 72 degrees.
<h2>
Area of rectangle is 10L-L²</h2>
Step-by-step explanation:
Let L be the length and W be the width.
Perimeter of rectangle = 2 ( L + W )
That is
2 ( L + W ) = 20
L + W = 10
W = 10 - L
We need to express the area of the rectangle as a function of the length of one of its sides.
Area = Length x Width
A = LW
A = L(10 - L) = 10L-L²
Area of rectangle is 10L-L²
<em>Answer : </em><em>15 days</em>
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<em>Explanation?</em>
<em>Well considering it takes them 3 days to make 8, we would divide 40 by 8 which is 5 and multiply 3 and 5 to get 15 days in total.</em>
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<em>(( Max ))</em>
Mark this as Brainliest if you felt as if I got this right !
Area of polygon ABCDE will be summation of all the areas of triangle = 7.95 + 9.8 + 8.75 = 26.5 square units.
Answer:
A. The range of both data sets is 40
Step-by-step explanation:
Range = the maximum value - the minimum value
✔️For the Seventh-Grade Students' data set,
Maximum value = 45
Minimum Value = 5
Range = 45 - 5 = 40
✔️✔️For the Eight-Grade Students' data set,
Maximum value = 45 (the value at the whisker to your far right)
Minimum Value = 5 (value indivl ated by the whisker on your far left)
Range = 45 - 5 = 40
Therefore, the two data sets can be described as having the same range of 40.
