Answer:
30.6 if im wrong someone correct me in comments and explain why
Step-by-step explanation:
I multiplied 2.3 by 4.5 and got 10.35 then divided it by 2 and got 5.175 and multiplied it by 2 and got 10.35 then I multiplied 4.5 by 4.5 and got 20.25 and added it to 10.35 and got 30.6
Easier way just add the two lengths and multiply it by height
