The correct answer is B) 9 m.
The measure of the sector of circle R is 32π/9 m. The measure of the central angle is 80°. This means that the sector is 80/360 = 2/9 of the circle. The area of a circle is given by A=πr², so the area of the sector is A=2/9πr². To verify this, 2/9π(4²) = 2/9π(16) = 32π/9.
Using this same formula for circle S, we will work backward to find the radius:
18π = 2/9πr²
Multiply both sides by 9:
18*9π = 2πr²
162π = 2πr²
Divide both sides by 2π:
162π/2π = 2πr²/2π
81 = r²
Take the square root of both sides:
√81 = √r²
9 = r
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Answer:
Felix books are less expensive.
Tyler's books vary in price more.
Step-by-step explanation:
Screw that!
Note: My answer came from Yahoo answer also there are some good reviews from that answer.
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Sin OH Cosin AH Tangent OA search "SOCAHTOA"
Answer:
z=12
Step-by-step explanation:
divide by 1/2 to get the variable z by itself
Answer:-68 i think
Step-by-step explanation:
