What do i do to solve this problem?

D

Step-by-step explanation:

Consider one of the circles

the area (A) of the sector is calculated as

A = area of circle × fraction of circle

Since ΔHPU is equilateral then ∠HPU = 60°, thus

A = πr² ×

   = π × 3² ×

   = 9π × = π

Shaded area = area of circle - area of sector = 9π - π = π

Since both circles are congruent then

total shaded area = 2 × π = 15π → D

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.