3x-7x=12x how would u solve this?
2 answers:
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Answer:
1. 121 π unit²
2. 143°
3. 151 unit²
Step-by-step explanation:
1.
Area of a circle is given by the formula A = πr²
where
A is the area,
r is the radius of the circle
From the given diagram, we can see that the radius is 11, hence the area will be:
The answer is units^2
2.
The unshaded secctor and the shaded sector equals the circle. We know that circle is 360°. The unshaded sector has an angle of 217°. So the shaded part will be 360 - 217 = 143°
The measure of the central angle of the shaded sector is 143°
3.
Area of a sector is given by the formula
Where
is the central angle of the sector (in our case it is 143°)
r is the radius (which is 11)
Plugging in all the info into the formula we have:
<em>rounding to the nearest whole number, it is </em>151 units^2
Option C:
Solution:
Given expression is
Note:
To find the correct expression for the above simplified expression.
Option A:
5 can be written as .
It is not the given simplified expression.
Option B:
Cancel the common factor in both numerator and denominator.
It is not the given simplified expression.
Option C:
Cancel the common factor in both numerator and denominator.
It is the given simplified expression.
Option D:
It is not the given simplified expression.
Hence Option C is the correct answer.