Answer:
A. 154 
Step-by-step explanation:
The formula for the area of a circle is 
First find the radius by dividing the diameter by 2, which is 7
≈154
Answer:
(x−1)(2x3+2x2+2x−1)
combine like terms, then factor
Answer:
(2,-4)
Step-by-step explanation:
Rotation of a point through 180°, about the origin when a point M (h, k) is rotated about the origin O through 180° in anticlockwise or clockwise direction, it takes the new position M' (-h, -k).
The correct answer would look something like this:
Let 's x the length of the pyramid:
V=x²*h/3
V=1024 and h=12
So x²*12/3=1024
==>x²=1024*3/12
==>x²=256
==>x²=16²
==> x=16 for (x=-16 must be exclude <0)
......brainpower pts pls
