Answer:
12
Step-by-step explanation:
Given: Diagonal of square= 
To find the perimeter of square, we need to find the length of sides of square.
∴ Using the formula of diagonal to find side of square.
Formula; 
Where, s is side of square.
⇒ 
Dividing both side by √2
⇒
∴
Hence, Length of side of square is 3.
Now, finding the perimeter of square.
Formula; 
⇒
∴ 
Hence, Perimeter of square is 12.
The answer you are looking for is B
Answer:
D
Step-by-step explanation:
Volume = length * width * height
= (2x + 1) * x * 3x
= 3x^2(2x + 1)
= 6x^3 + 3x^2 answer