Question

Find the area of the shaded sector below.

Answer 1

Find the area of the circle and divide it by 6

Answer 2

Hint: The answer is 9pi/6

Answer 3

Where did you get the 9 and 6 from ?

Answer 4

Find the area of the circle.

Answer 5

i got 4.71

Answer 6

In terms of pi

Answer 7

47.1 ? -__ -

Answer 8

i don't know actually.

Answer 9

Your answer will be cPI, where c is a number.

Answer 10

Remember the area of a circle is pi*r^2

Answer 11

9.42 for cPI and 11309.73 for pi*r^2 ?

Answer 12

For r would i use the degree or the number ?

Answer 13

what does r stand for in the equation for the area of a circle?

Answer 14

radius correct

Answer 15

Yep so square the radius and then multiply that by pi then divide that by the region of the circle it is which is 1/6

Answer 16

9pi/6 = 4.71

Answer 17

?

Answer 18

Yes sir

Answer 19

Oh i forgot to ask would it be cm square or cm ?

Answer 20

Also do i always divide by 6 ?

Answer 21

Oh you got 6 by dividing 360 by 60 right

Answer 22

60 degrees is 60/360 = 1/6 of a full revolution (360 degrees)

so the area of the sector will be 1/6 of the area of the full circle


so that's why you're dividing by 6 (in this case)

Answer 23

Oh okay i think i get it now, can i put another question up and you tell me if i solved it right ?

Answer 24

you basically find the area of the full circle (using A = 2pi*r)

then you divide by 6

sure go for it

Answer 25

Hold on do i add square cm or just cm to 4.71 ?

Answer 26

linear units are units like inches, centimeters, etc

Answer 27

they measure distance and length

Answer 28

area units are units like square inches, square centimeters, and so on

Answer 29

so you add on square cm (not just cm)

Answer 30

Thank i was getting confused with that (:

Answer 31

np

Answer 32

^ that would be 6cm2 or would i just be 6 cm ?

Answer 33

it *

Answer 34

the area is in square meters (given)

so the area stays in square meters (unless you convert)

Answer 35

so 6 m^2

Answer 36

THis is the last one.

Answer 37

find the total area

multiply it by 275/360, since you're taking only this fraction of the area (and not the whole thing)

Answer 38

i got 1.31

Answer 39

way too small

Answer 40

No i got that for 275/360 ahahaha

Answer 41

oh, that should be some number less than 1 then

Answer 42

you divided in the wrong order

Answer 43

360/275 = 1.31

Answer 44

is that one right ?

Answer 45

flip the fraction, the 275 should be on top

Answer 46

oh 0.76

Answer 47

yep

275/360 = 0.763888

then you take that result and multiply it with the total area of the circle

Answer 48

64*0.76*Pi

Answer 49

152.73 would be my answer

Answer 50

yes approximately

Answer 51

a closer approximation is 153.511111111111

Answer 52

the difference is due to round-off error

Answer 53

and the fact that pi is approximate in itself

Answer 54

Oh right the hundredths place is the third right or is it the four i'm really slow today -__ -

Answer 55

it goes

tenths
hundredths
thousandths
ten-thousandths
...
...

so it's the second digit after the decimal point

Answer 56

Left or right, sorry you must think i lack brain cells.

Answer 57

Ahahaha you answered it, i'm really not getting anything today it's on the right

Answer 58

that's ok, just take things one step at a time

Answer 59

Okay i'm going to try to solve this one

Answer 60

145/360 = 0.40 * 3.14 * 3.7squared

Answer 61

17.2 square cm

Answer 62

inches *

Answer 63

you round to 2 places (not 1)

Answer 64

17.3 inches ?

Answer 65

2 decimal places (ie 2 digits after the decimal point)

Answer 66

19.20 inches

Answer 67

you should have gotten

(145/360)*3.14*3.7^2 = 17.3140472222222 = 17.31

Answer 68

so 17.31 is what they're looking for

Answer 69

Oh you just multiply 3.7 by two i thought i had to multiply it by itself .

Answer 70

3.7^2 means 3.7*3.7

Answer 71

it means 3.7 squared

3.7^2 = 3.7 squared

Answer 72

if i wanted to say "3.7 times 2"

then I would write 3.7 * 2

Answer 73

I did it how you said to do it but i got 17.20

Answer 74

hmm

Answer 75

maybe you typed it differently

Answer 76

Okay you know how you divide 146 by 360 how many numbers after 0. i'm suppose to use i only use two after 0. example 0.10 get me ?

Answer 77

i think so

Answer 78

so instead of using 0.40277777777778 you can only use 0.40

Answer 79

Then i don't know why i'm getting it wrong, maybe i'm not meant to pass geometry.

Answer 80

what answer is it saying is wrong?

Answer 81

No but i'm not getting what you get so i'm obviously doing something wrong.

Answer 82

well I just typed it all at once

Answer 83

instead of breaking it up

Answer 84

i typed all of (145/360)*3.14*3.7^2 at once

Answer 85

don't forget to round to two places

Answer 86

OH ! i don't do that, how brain dead of me.

Answer 87

Yes i finally got it !!! 17.314

Answer 88

well you want 2 dec places

Answer 89

Which makes it 17.31

Answer 90

yep

Answer 91

I know i was just trying to show you that i finally got it down, thank you so much you basically brought me back from hell and that i will never forget.

Answer 92

geometry isn't hell, so I didn't bring you back from there lol

Answer 93

but I can see how it's tough

Answer 94

Can it be because i'm stressing that i'm not get the things right away ?