3(8)-12=12
24-12=12
The fourth choice.
Yeah I think you already got it
Answer:
you are doing -4. so the first parenthesis -4(x+2x+1) is incorrect.
Step-by-step explanation:
Hope this helps plz hit the crown :D
The answer for the question is 31
Answer:

Step-by-step explanation:
We have the square and four equilateral triangles.
The formula of an area of a squre:

a - length of side
The formula of an area of an equilateral triangle:

a - length of side
Clculate the areas:
SQURE:

TRIANGLE:

The SURFACE AREA of a square pyramid:

Put x = 5:
