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just olya [345]
3 years ago
10

Please help! ill mark you as brainleist if you get it correct!​

Mathematics
2 answers:
lesya [120]3 years ago
4 0

Answer:

6

Step-by-step exp

solniwko [45]3 years ago
4 0

Answer:

6

Step-by-step explanation:

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const2013 [10]
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4 years ago
A circle with radius 9 has a sector with a central angle of 120°.
Vitek1552 [10]

120º is 1/3 of a complete revolution of 360º. So the area of this sector should be 1/3 the area of the complete circle.

A circle with radius 9 has area 9^2 π = 81π.

So the sector has area 81π/3.

Put another way: The area <em>A</em> of a circular sector and its central angle <em>θ</em> (in degrees) occur in the same ratio as the area of the entire circle with radius <em>r</em> according to

<em>A</em> / <em>θ </em>º = (π <em>r </em>^2) / 360º

==>  <em>A</em> = π/360 <em>θ r</em> ^2

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<em>A</em> = π/360 * 120 * 81 = 81π/3

8 0
4 years ago
What is the formula for the area of a triangle?
SashulF [63]

<em>The</em><em> </em><em>formula</em><em> </em><em>to</em><em> </em><em>find</em><em> </em><em>the</em><em> </em><em>area</em><em> </em><em>of</em><em> </em><em>a</em><em> </em><em>triangle</em><em> </em><em>is</em><em> </em><em>:</em>

<em>1</em><em>/</em><em>2</em><em> </em><em>base</em><em>*</em><em>height</em>

<em>For</em><em> </em><em>inst</em><em>ance</em><em>:</em>

<em>base</em><em>=</em><em>4</em><em> </em><em>cm</em>

<em>height</em><em>=</em><em>5</em><em>c</em><em>m</em>

<em>area</em><em> </em><em>of</em><em> </em><em>traingle</em><em>=</em><em>1</em><em>/</em><em>2</em><em>*</em><em>b</em><em>*</em><em>h</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em>1</em><em>/</em><em>2</em><em>*</em><em>4</em><em>*</em><em>5</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em>1</em><em>0</em><em>c</em><em>m</em><em>^</em><em>2</em>

<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em><em>.</em><em>.</em>

<em>Good</em><em> </em><em>luck</em><em> </em><em>on</em><em> </em><em>your</em><em> </em><em>assignment</em>

6 0
3 years ago
What is 23% of 20???????
Elan Coil [88]
It is 4.6 

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6 0
3 years ago
Read 2 more answers
Please help me please
Sergeu [11.5K]

Answer:

0.09,70%,5/8, 0.8

7 0
3 years ago
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