Question

If the radius of G is 10 and angle AGB = 72, calculate the area of the sector in G formed by the segments AG and GB.

Answer 1

give medal and fan if answered.

Answer 2

help

Answer 3

define 'sector'

Answer 4

anything in GAEB

Answer 5

does it include the triangle, or just the portion of the circle?

Answer 6

the triangle

Answer 7

i dont see enough information to determine the area of the triangle for those parts.

Answer 8

hmm, might be tho ... lets draw it out maybe

Answer 9

i cant say that i see a way to determine the length of the base from this.

Answer 10

or trig it

Answer 11

oh

Answer 12

is there any possible guess

Answer 13

not for the triangle ... the terminology 'sector' implies the circle area to me tho

Answer 14

oh

Answer 15

well then what is the circle area

Answer 16

?

Answer 17

you would need to find the formula in your material for the area of a circle ... then we can progress

Answer 18

A=πr2

Answer 19

for a circle

Answer 20

and we know r right?

Answer 21

A.20pi
B.100pi
C.2pi
D.72pi
the answer has to one of these

Answer 22

... we know r right? what does the r stand for?

Answer 23

yah radius

Answer 24

then our area of the full circle is? 10^2 pi

but we only want 72 degrees of it .. not 360

Answer 25

yah

Answer 26

10^2/360 gives us the area of 1 degree, and 72 degrees is just

72 * 10^2/360

Answer 27

being lazy and omitting the pi part of course

Answer 28

of course

Answer 29

so is it 100π

Answer 30

100pi is the area of the whole circle ... we want 72 out of the 360 degrees that make up the whole

Answer 31

what is 100/360?

Answer 32

0.27

Answer 33

and we want 72 of them ... what do we get when we add .277777... 72 times?

Answer 34

72 * 100/360

9*8 * 10/36

8 * 10/4

2 * 10

Answer 35

so its 20π

Answer 36

thatll do it as long as sector is refering to the part of the circle

Answer 37

okay thanks

Answer 38

yw