No Solution (i cant see the picture you attached but i can explain why.)
cos^-1(sqrt2/2)=0 is false
The volume of a cylinder is given by

Let
and 
The new volume becomes

So, the new volume is 8 times the original volume. In fact, volume scales linearly with the height and quadratically with the radius.
Answer:1,81 and 121.;)
Step-by-step explanation:
Linear angles are two angles that are part of a straight angle (180*), so both must add up to 180. If 4x+3+10x-5+180, then 14x-2=180, then 14x=182, and x=13
Answer:
B
Step-by-step explanation:
since x is GREATER than -25, the shaded part has to be on the right of -25