What is a equals 21 w + 21 h +2wh solve for h

If you mean: a= 21w + 21h + 2wh

then

you subtract 21w and 21h from both side.

here will look like: a - 21w - 21h= 2wh

then divide 2w from each side

look like this: a - 21w - 21h / 2w = 2w/h

answer is  a - 21w - 21h / 2w = h

здрасти

step-by-step explanation:

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

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