Question

Which of the following could be used to calculate the area of the sector in the circle shown above?

π(10in)237 over 360
π(10in)37 over 360
π(37in)210 over 360
π(37in)10 over 360

Answer 1

None of these answer choices are correct. Is there something missing from one of them?

Answer 2

ohhh they are missing the ^2

Answer 3

on which ones?

Answer 4

all of them

Answer 5

is (10in)^2 on all of them

Answer 6

how is the ^2 written? over the 37?

Answer 7

oh ok

Answer 8

what is the area of the entire circle? use this formula

A = pi*r^2

Answer 9

985.96?

Answer 10

if r = 10, then r^2 = ??

Answer 11

ohh wait my math was wrong. i didnt follow pemdas

Answer 12

314 (putting pi as 3.14)

Answer 13

don't replace pi with 3.14, leave pi as it is

Answer 14

ahhhh ok hold on

Answer 15

314.159..

Answer 16

no it would just be 100pi

Answer 17

think of pi as a variable

Answer 18

oh ok

Answer 19

now apparently, they didn't square the 10 to get 100

they left it as 10^2

so we'll have (10)^2*pi as part of the answer

Answer 20

or pi*(10)^2

Answer 21

`pi*(10)^2` is the area of the WHOLE circle

we just want that pizza slice

to get the area of that slice, we multiply by 37/360

Answer 22

\[\Large \pi*(10)^2\times\frac{37}{360} = \frac{\pi\times(10)^2\times37}{360}\]

Answer 23

example: say the angle is 90 degrees

90/360 = 1/4

so we take a quarter of the full area to get the slice area

Answer 24

ahh.. so the answer is b?

Answer 25

nooo its a. the things were written wrong. i see

Answer 26

a) π(10in)^2 37 over 360
b) π(10in) 37 over 360
c) π(37in)^2 10 over 360
d) π(37in) 10 over 360

Answer 27

ah I see now, thanks

Answer 28

yeah it's definitely A

Answer 29

yay thank you!!

Answer 30

no problem