Answer:

Step-by-step explanation:
plug 1/4 into the formula for surface area and simplify to get 6/16, or 3/8.
Can’t get the answer what is m2?
Answer:
x = 1.5
Step-by-step explanation:
We need a value of x that would result in 2x+9 = 12
2x+9 = 12
2x = 12 - 9
2x = 3
x = 3/2 or 1.5
====
CHECK
Does 2x+9 = 12 when x = 1.5?
2x+9 = 12
2(1.5)+9 = 12
3 + 9 = 12 YES
40+7+0.1+0.05 this is the answer i think