The third term of an arithmetic sequence is 21, and the eighth term is 56. the first term

The first term is 7 because they both can be divided by 7.

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

only 10/60 isn't equivalent

hope this : )