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Keith_Richards [23]
3 years ago
11

Here is quite a simple question. How do you work out the area of a circle?

Mathematics
2 answers:
Tomtit [17]3 years ago
7 0
A=\pi r^2 where r is the radius of a circle.
Usimov [2.4K]3 years ago
5 0
<span><span>The area of a circle is π (pi) times the Radius squared, which is written: A = π × r2</span></span>
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100 POINTS PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
love history [14]

Answer:

A: 68.25 minutes

B: 12 times

C: 42 mins and you decide this part I actually don't know. But I think it could be reasonable, after 40 times someone should get pretty good at it.

Step-by-step explanation:

a: 72 -0.75*5 = 68.25

b: M=63=72-0.75n

subtract 72 from each side: -9 = -0.75n

divide each side by -0.75: n = 12

so 12 times

c: 72 - 0.75(40) = 42 minutes. Now this could be is reasonable, but we don't know what their desert is. But 40 times is a lot of practice.

7 0
2 years ago
Find the other endpoint of the line segment with the given endpoint and midpoint.
Vlad1618 [11]

Answer:

(19,-14)

Step-by-step explanation:

let endpoint 2 be x2,y2

then apply mid point formula

x=(x1+x2)/2

y=(y1+y2)/2

6 0
3 years ago
Ling's elementary school principal wants to hire some new teachers. 6 teachers applied for one 1st grade teaching job, and 3 tea
kolbaska11 [484]

Answer:

Ling's principal can hire new teachers in 54 different ways.

Step-by-step explanation:

Since Ling's elementary school principal wants to hire some new teachers, and 6 teachers applied for one 1st grade teaching job, and 3 teachers applied for one 2nd grade teaching job, and there is also a job opening for a 3rd grade teacher, and 3 teachers applied for the job, to determine how many different ways can Ling's principal hire new teachers the following calculation has to be done:

6 x 3 x 3 = X

18 x 3 = X

54 = X

Therefore, Ling's principal can hire new teachers in 54 different ways.

8 0
2 years ago
What is the radius, in centimeters, of a circle that has a circumference of 161 centimeters?
elena-14-01-66 [18.8K]

Answer:

25.63694268 = r

Step-by-step explanation:

The circumference is

C = 2*pi*r

161 = 2*(3.14) *r

161 = 6.28 r

Divide each side by 6.28

161/6.28 = r

25.63694268 = r

3 0
2 years ago
A red die is tossed and then a green die is tossed. What is the probability that red die shows a number larger than three and th
makkiz [27]
If you roll two fair dice, a green one and a red one?
A= are the outcomes on the dice independent?
B= Find P(1 on green die and 2 on red die)
C= Find P(2 on green die and 1 on red die)
D= Find P(1 on green die and 2 on red die) or (2 on green die and 1 on red die)

A= yes
B= p(1)*(p2)=1/6*1/6=1/36
C= p(2)*(p1)=1/36
D= 1/36=1/18 I hope it helps !
4 0
2 years ago
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