The answer is A. 88.8 cm2
Work:
74 x 2 = 148
14.8 = 29.6
Add them = 177.6
then 
Answer: please see the attachments for the solution.
Step-by-step explanation:
Answer:
y = (ax)2
y = 2ax
divide both sides by 2a to make x the subject of the formula.
y/2a = 2ax/2a
x = y/ 2a
hope this was helpful,thanks