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

10

step-by-step explanation:

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.