A formula for calculating A, the area of the trapezoid, A= 1/2 (b + b), where h is the height of the trapezoid, and b and b are the lengths of parallel sides. What is A when h = 4 centimeters, b = 10 centimeters, and b = 5 centimeters?

Should be 30

Extra blank space because for some reason I have to have a minimum of 20 words so I will keep writing until it lets me post it ok? Ok.

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

1,150 give brainliest

step-by-step explanation

2r= 2300

r =1150