2 years ago

A sector has angle 2.5 radians and perimeter of 18cm. find the radius of the sector

Mathematics

1 answer:

babunello [35]2 years ago

8 0

Answer:

4 cm

Step-by-step explanation:

Perimeter = 18cm

θ = 2.5 radian

s = rθ, s = Arc length

Perimeter of Sector, P = arc length, s + 2r

Perimeter = rθ + 2r

r = Radius

18cm = r(2.5) + 2r

18cm = 2.5r + 2r

18cm = 4.5r

r = 18 /4.5

r = 4

You might be interested in

What is the equation of the line x–3y=18 in slope-intercept form?

olya-2409 [2.1K]

Solve the equation for y

x-3y= -18

-3y = -18-x

now, divide both sides with -3

y = (-18-x)/-3

y = 6 +x/3

your slope is 1/3

and y-intercept is 6

4 0

2 years ago

385 Divided by eight

PSYCHO15rus [73]

48.125 is the answer

5 0

2 years ago

Read 2 more answers

What is the volume of this container?

andreyandreev [35.5K]

Answer:6000 cm3

Step-by-step explanation:You do 20x10x15=3000. Then you do 3000x2= 6000. So your answer will be 6000cm3

3 0

2 years ago

A spinner is divided into 8 equal sections, and each section contains a number from 1 to 8. What is the probability of the spinn

Elodia [21]

Answer:

StartFraction 1 over 8 EndFraction

Step-by-step explanation:

It would be 1/8 because there is 8 sections on the spinner and 5 is on 1 section of the spinner so it would 1/8.

8 0

2 years ago

At a restaurant you only have 20 dollars to spend on dinner. in addition to the cost of the meal you must pay only 5% sales tax

wlad13 [49]

$16.68 is the most expensive item you can order with $20.00

7 0

2 years ago