9/12 + 6/12
a. 1^1/3
b. 4/5
c. 5/8
d. 1^/14

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

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.