Answer:
Step-by-step explanation:
<h3>Definition(s):</h3>
1. <em>Circumference</em>
The outer boundary, especially of a circular area; <em>perimeter</em>.
2. <em>Radius</em>
A straight line extending from the center of a circle or sphere to the <em>circumference</em> or <em>surface</em>.
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<h2>solution</h2>
The circumference of a circle can be obtained by using the equation below:
where the mathematical constant, 
, has a value of approximately 3.14 and
represents the radius of the circle.
All we have to do is multiply the given radius by two and multiply that value by to determine C:
Slope of line l (m1)=5
Slope of line w(m2)=-1/5
Since,m1×m2=-1 , line 'l' and 'w' are perpendicular.
Since line 'k' doesn't intersect line 'l' ,they must be parallel b'coz they are in the same plane as well.
Here, 'l' is perpendicular to 'w' and parallel to 'k'....so w and k must be perpendicular to each other.
It can be proven:
Since l and k are parallel, their slopes are equal.
So, slope of k (m3)=5
Since m3×m2=-1 ,w and k are perpendicular.
Hence, angle between w and k is 90°
D cause u can round 8 to 10
There are 2 ways to do this....
(1) 20(1.15) = 23
(2) 20 + 0.15(20) = 20 + 3 = 23
Answer:
3
Step-by-step explanation:
