Answer:
ruler placement postulate is important to define relative positioning between points.
Although both A & C are possible, we don't consider a line to have an "origin". A distance can have an origin, so the answer must be A.
Your answer would be 60 cm
Perimeter is when you add all sides together.
Length = 10 cm
Width = 20 cm
There are 4 sides and 2 of each has the same measurements.
So:
L = 10 x 2 = 20
W = 20 x 2 = 40
Add them.
40 + 20 = 60
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
Answer:i was really trynna answer this when im in 7th grade ;-;
Step-by-step explanation: i dont even know why i tried bothering
