The answer is D. If you substitute those values for n, you should be able to find that 4 makes the expression equal to 6.
ANSWER
The correct choice is C.
EXPLANATION
The perimeter of a rectangle is given by;
P=2(w+l)
For the first rectangle, the perimeter is;
P=2(8+4)=24
For the second rectangle, the perimeter is
P=2(8+8)=32
For the third rectangle, the perimeter is
P=2(8+12)=40
The correct choice is C
volume of cylinder = PI*r^2*h
r=11
h=15
using 3.14 for pi
3.14*11^2*15 = 5699.1 units^3
1. scalene
2. rectangle or parallelogram
3. right triangle