The measure of central angle qrs is radians. what is the area of the shaded sector? 36 72 144 324

We are given radius of the given circle = 18 units.

The shown angle of the sector is a little smaller than π radians.

Let us take it π radians.

We know formula for area of a sector is

We took angle = π

Plugging values in formula, we get

Area of the sector is =

=

= 162π

The nearest value of 162π in the given options is 144π .

Therefore, area of the shaded sector is 144π.

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -