Question

i need some help please with geometry

Answer 1

@Hero

Answer 2

@Vocaloid

Answer 3

@Pixel

Answer 4

its a quadrilateral so the measure of allangles is 360

Answer 5

so since we have one of the angles, do we subtract 82 from 360?

Answer 6

opposite angles are supplementary

<A + <C = 180
you have <C so just solve for <A

Answer 7

98?

Answer 8

perfect

Answer 9

think you can help with some more?

Answer 10

maybe, I'll do what I can before I have to go

Answer 11

so what i see here now with the knowledge i've gained from the last question, i first find X, then i subtract whatever 2x+4 is by 180?

Answer 12

you're on the right track

you can start with <B + <D = 180 to solve for x
then plug into <A

then solve <A + <C = 180 for <C

Answer 13

x= 48

Answer 14

good, keep going

Answer 15

which makes <a 100, meaning angle c is 80

Answer 16

perfect, 80 = your sol'n

Answer 17

hm I got something diff. I think

s = r * theta
(as long as we're in radians)

where s is the arc length, r is radius, theta is the angle

Answer 18

plugging in the numbers

7.2 = 8 * theta

Answer 19

so the answer is 8?

Answer 20

you need to solve for theta

Answer 21

now i'm slightly getting confused now

Answer 22

the formula for arc length in terms of theta (the central angle of a circle), r (the radius), and s (the arc length) is

s = r * theta

you are given s = 7.2 cm, and r = 8, so plug these into the equation and solve for theta. theta is your solution.

Answer 23

theta would have to be a negative, right?

Answer 24

? no, both sides of the equation are positive so theta must be positive

Answer 25

7.2 = 8 * theta

you just need to divide both sides by 8 to isolate theta

Answer 26

0.9?

Answer 27

good, theta = 0.9 radians

Answer 28

hm I got something a lot larger

s = r * theta

r = 36.9, theta = 8*3.14/5, solve for s

Answer 29

25.12 was what 8pi/5 was,

Answer 30

8 * 3.14 / 5 = 5.024 (which was your original answer)

but keep in mind you also need to multiply by the radius (36.9)

so 5.024 * (36.9) = ?

Answer 31

185.38

Answer 32

almost

185.3856 is the full solution which rounds to 185.39

Answer 33

i have time for like one more before I gotta start driving home

Answer 34

ok, this is area of a sector which is a bit different than arc length

(theta/2pi) * pi * r^2
where theta is the central angle and r is the radius

Answer 35

ok I actually need to go now but
(5 * 3.14 / 6) / (2 * 3.14) * 3.14 * (5.6)^2 with everything plugged in

Answer 36

41.03