Fifteen more than three times a number is 45

First, put it in an equation.

(x*3) + 15 = 45

10 * 3 = 30

30 + 15 = 45

Now plug it in to double check:

(10 * 3) + 15 = 45

30 + 15 = 45

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