Khan academy unit test!

a circle with radius 3 has a sector with a central angle of 9/17 π radians .

what is the area of the sector?

The area of sector is 7.48 unit²

Step-by-step explanation:

Given as :

The radius of circle = r = 3 unit

The measure of central angle =Ф = radian

Let The area of sector = A unit²

Now, According to question

Area of sector = π× radius × radius ×

Or, A = π× r × r ×

Or, A = π× r × r ×

where  π = 3.14

∵ 180° = π radian

So, 360° = = 2 π radian

Or,, A = π× r × r ×

Or, A =  π× r × r ×

Or, A = 3.14 × 3 unit × 3 unit ×

Or, A = 3.14 × 3 unit × 3 unit × 0.2647

∴   A = 7.48 unit²

So,The area of sector = A = 7.48 unit²

Hence, The area of sector is 7.48 unit²  Answer

33

step-by-step explanation: g=6

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!