What is the simplified form of the following expression? 6c2+2.5d-d+2c2-3s
a. 4c2-1.5d
b. 6c2+0.5d
c. 8c2-1.5d
d. 8c2+1.5d

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