Letter D. because any opposite number of a negative has to be a positive!
X57 I think no just doing this for points so made a random number lol
Yes square meters is a type of surface area.
Answer:
and yeah ikr I don't understand why
You should always remember that a cylinder consists of circles that are all over each other to form the height of the cylinder.
So the volume of the cylinder= the area of the surface circle* the height.

Then,

So,

radius is approximately 3.4cm
*If you cannot see the equations properly please wait till it downloads or refresh the page*
Hope this helps.