The formulas for arc length and area of a sector are quite close in their appearance. The formula for arc length, however, is related to the circumference of a circle while the area of a sector is related to, well, the area! The arc length formula is
. Notice the "2*pi*r" which is the circumference formula. The area of a sector is
. Notice the "pi*r squared", which of course is the area of a circle. In our problem we are given the arc length and the radius. What we do not have that we need to then find the area of a sector of the circle is the measure of the central angle, beta. Filling in accordingly,
. Simplifying by multiplying by 360 on both sides and then dividing by 36 on both sides gives us that our angle has a measure of 60°. Now we can use that to find the area of a sector of that same circle. Again, filling accordingly,
, and
. When you multiply in the value of pi, you get that your area is 169.65 in squared.
Answer:
It is 2XY + 9x -7y, thank me later
True. because a negative times a positive will equal out to a negative
1.
Collinear : Points on the same line
Non-collinear: Points not on same line
Line: All points between any two points extending in opposite directions.
Space: Where things exist
Coplaner: Points and lines on the same plane
Geometry: Earth measure
Plane: A flat surface
Non-coplaner: Points and lines not on the same plane
2. EF
3. EGD
4. AD
5. G
Answer:
y=3/10;X=-7/10
Step-by-step explanation:
put y=x+1 into where you find y.
solve for X which is -7/10
and put -7/10 into the second equation and solve for y. which is also =3/10