So you would start with the square and do 18 times 18 which equals 324 then for the triangle it's base times height divided by two so 9 times 18 divided by 2 which equals 81 then you add the triangle plus the square and your final answer is
answer:405
Answer:
d
Step-by-step explanation:
Answer:
90x+10y
Step-by-step explanation:
Add 89 and 1
Add 5 and 5
90x+10y in this order