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rewona [7]
3 years ago
7

What is the measure of the missing angle in this triangle? 25° 155 35° 60°

Mathematics
2 answers:
kvv77 [185]3 years ago
7 0

Answer:

its 25

Step-by-step explanation:

35+120 =155

180 (the sum of a triangle) - 155 = 25

missing triangle equals= 25

to check= add the 3 triangles together, if the sum adds up to 180 its correct.

125+35+25= 180 √

Anettt [7]3 years ago
4 0

Answer: im just going to guess 35 degrees

Step-by-step explanation:

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Find the area of each regular polygon below. Round values to the nearest 0.01. Show work for all steps clearly.
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The area of the hexagon and pentagon area 779.4cm^2 and 84.303cm^2 respectively.

Data;

  • apothem = 15

<h3>Area of a Hexagon</h3>

The area of a hexagon with apothem 15 can be calculated by first finding the length of the side of the hexagon.

Length of hexagon can be found using trigonometric ratio;

a = x\sqrt{3}

Making x the subject of formula

x = \frac{a}{\sqrt{3} }\\x = \frac{15}{\sqrt{3} }\\x = 8.660

And then the length of the side is 2x

s = 2 * 8660 = 17.32

The perimeter of the hexagon is;

p = 6s \\p = 6 * 17.32=103.92

And the area is given as

A = \frac{1}{2} * perimeter * apothem\\A = \frac{1}{2} * 103.92 * 15\\A = 779.4unit^2

The area of the hexagon is 779.4 squared unit.

<h3>Area of the pentagon</h3>

The area of the pentagon can be found using several methods, but we can simply find the angle between the sides if we divide the pentagon into 10 pieces and then substitute the formula.

Total area of a pentagon is 360 degree.

\theta = \frac{360}{10} = 36^0\\

The area of a pentagon is given as

A = \frac{5s^2}{4 tan \theta} \\A = \frac{5 * 7^2}{4* tan36} \\A = 84.303cm^2

The area of the pentagon is 84.303cm^2

From the calculations above, the area of the hexagon and pentagon area 779.4cm^2 and 84.303cm^2 respectively

Learn more on area of polygons here;

brainly.com/question/1592439

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Answer:

Step-by-step explanation:

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