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2 years ago

A circle has a radius of 6 cm.

Mathematics

2 answers:

Sedbober [7]2 years ago

5 0

Yes I agree with the answer

Lapatulllka [165]2 years ago

3 0

Answer:

$1.5\pi$ cm

Step-by-step explanation:

A central angle measuring $45^\circ$ is $\frac{45^\circ}{360^\circ}=\frac{45}{360}$ , or $\frac{1}{8}$ of the entire circle. The circumference of the circle is given by the formula $2\pi r$ , which is $12\pi$ .

Then, the length of an arc measuring $\frac{1}{8}$ of the entire circle is $12\pi\cdot\frac{1}{8}=1.5\pi$ cm.

You might be interested in

11 more than four times a number is 39

Aliun [14]

Hello!

Your answer is: 7

(X = "A number")

"11 more than four times a number is 39" in equation form is: 4X + 11 = 39

to solve, first subtract 11 from both sides:

4X = 28

then divide both sides by 4 to get:

X = 7

I hope this helps, and have a nice day!

4 0

4 years ago

My favorite songstress gives away 25% of the sales of her signature fragrance collection to her charity. Last month her sales we

guajiro [1.7K]

Answer:

300

Step-by-step explanation:

4=25%

12=1200

12/4=3

add the zeroes from 1200

300

to make sure...

300x4=1200

5 0

3 years ago

Workers have been down the street installing two blinking red lights in front of the fire station. The two lights are always tur

daser333 [38]

Answer:

After 88 seconds, they will blink together.

Step-by-step explanation:

Time after which the first light blinks = 8 seconds

Time after which the second light blinks = 22 seconds

Initially, both the lights blink together.

To find:

The time at which they will blink together again.

Solution:

Let us have a look at the time after which each light will blink.

First light will blink after:

8 s, 16 s, 24 s, 32 s, 40 s, 48 s, 56 s, 64 s, 72 s, 80 s, 88 s, 96 s, 104 s, ......

Second light will blink after:

22 s, 44 s, 66 s, 88 s, 110 s, .....

It can be seen that common time is 88 second, at which the both will blink together.

So, the answer is 88 s.

This answer can also be computed by taking the LCM (Least Common Multiple) of both the numbers i.e. 8 and 22.

Using the factorization method:

$8=\underline{2}\times 2\times 2$

$22=\underline{2}\times 11$

Common is 2.

Therefore the LCM will be:

$2\times 2\times2\times 11 = \bold{88}$

So, the answer is 88 s.

5 0

3 years ago

Find the distance between the points (3, 8) and (0,4).

Bingel [31]

Answer:

Step-by-step explanation:

(3,8) (0,4)

X1 = 3 X2 = 0

Y1 = 8 Y2 = 4

$D=\sqrt{(X1-X2)^{2}+ (Y1-Y2)^{2} }$

$D= \sqrt{(3-0)^{2} + (8-4)^{2} }$

Do what's in the parentheses so...

3-0= 3
8-4= 4

Now plug it in!

$D= \sqrt{(3)^{2}+(4)^{2} }$

Now you are going to finish the parentheses so...

(3)^2= 9
(4)^2= 16

Plug that in so that you have this...

$\sqrt{9+16}$

Add 9+16 to get...

$\sqrt{25}$

Then you are going to find the number or numbers that make this a perfect square...

$\sqrt{25}= 5$

So 5 is your answer

7 0

3 years ago

Question 8 (1 point)

ra1l [238]

Probly the first one it looks right

6 0

3 years ago