Help with this question pls , use answer choices

B.) 3√15

Step-by-step explanation:

a^2 + b^2 = c^2

x^2 + 11^2 = 16^2

x^2 + 121 = 256

x^2 = 256 - 121

x^2 = 135

√x^2 = √135

√135 = √9 • √15

√9 = 3

√15 = √15

3√15

answer rather than having to add and subtract the measurements of the semi-circle, notice that the semicircle to the left of ad is actually identical in area to the blank semicircle-shaped space to the left of bc. so if we transferred the red semicircle into the blank space, we would end up with a square of side length 24 cm. the area of a square is s^2 = 24^2 = 676 cm^2.

u also answered this so i think u would know but i am here to

put in or use mine