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3 years ago

Circle O has a circumference of 36tt cm. what is length of the radius r

Mathematics

2 answers:

allochka39001 [22]3 years ago

3 0

Answer:

5.73cm

Step-by-step explanation:

Given parameters:

Circumference of the circle = 36cm

Unknown

Length of the radius = ?

Lets represent the radius by r

Solution

The circumference of a circle is the defined as the perimeter of a circle. The formula is given as:

Circumference of a circle = 2πr

Since the unknown is r, we make it the subject of the formula:

r = $\frac{circumference of the circle}{2π}$

r = $\frac{36}{2 x 3.142}$ = $\frac{36}{6.284}$ = 5.73cm

Korolek [52]3 years ago

3 0

Answer:

The radius = 18 cm.

Step-by-step explanation:

I am assuming that is 36π.

If so, then circumference = 2 π r and:

2 π r = 36 π

r = 36π / 2π

r = 18.

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iren2701 [21]

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2 years ago

Suppose an ant walks counterclockwise on the unit circle from the point to the endpoint of the radius that forms an angle of rad

serg [7]

Answer:

$\frac{4\pi}{3}$

Step-by-step explanation:

The original questions is suppose an ant walks counterclockwise on a unit circle from the point (1,0) to the endpoint of the radius that forms an angle of 240 degrees with the positive horizontal axis.

To find the distance ant walked we find the arc length of the sector with central angle 240 degree and radius =1 (unit circle)

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2 years ago

Answer correctly for brainliest pleaseeee!!

wolverine [178]

Answer:

A. (x,y) → (-x,y)

Step-by-step explanation:

A: (-5,-1)
A': (5,1)
B: (-3, -3)
B': (3, -3)
C: (-5, -5)

C': (5, -5)
D: (-7, -3)

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2 years ago

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A square has an area of 100 in ^2. What is the perimeter of the square

almond37 [142]

Area of a square is its side length squared...

A=s^2 solving for s...

s=√A

The perimeter of a square is 4 times its side length...

P=4s, and since s=√A

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P=4√100

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3 years ago

Anyone know? Will mark brainliest if correct!

zvonat [6]

Answer:

C. For each bolt the number of cracks decreased by an average of 1/2.

Step-by-step explanation:

Consider the points (2, 8) and (8, 5) on the line.

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3 years ago