The formula for a trapezoid relates the area a, the two bases, a and b, and the height, h. a=h (a+b) 2 solve for b. a. b= 2a h +a b. b= 2a−a h c. b= ah 2 −a d. b= 2a h −a

The formula of area of trapezoid is given by

Where a and b are the two bases and h is the height and we have to solve for b .

TO solve for b, first we need to get rid of the denominator 2 by multiplying whole equation by 2, that is

Now we need to get rid of h and for that we have to divide both sides by h, that is

Now we need to get rid of a by subtracting a to both sides.

Therefore correct option is D .

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step-by-step explanation: