The sector of a circle has a central angle of 144º and an area of 70.7 square meters. Find the
radius of the circle.

HELP PLEASE!

the radius of the circle is 7.5 meters

Step-by-step explanation:

The formula for determining the area of a sector is expressed as

Area of sector = θ/360 × πr²

Where

θ represents the central angle.

r represents the radius of the circle.

π is a constant whose value is 3.14

From the information given,

70.7 square meters

θ = 144 degrees

Therefore,

70.7 = 144/360 × 3.14 × r²

70.7 = 1.256r²

r² = 70.7/1.256

r² = 56.29

Taking square root of both sides of the equation, it becomes

r = √56.29

r = 7.5 meters

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1  

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step-by-step explanation:

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