Consider an Axisymmetric problem of which is having a radius of r, rotational angle and length l. Then r dl d is known as ____

Consider an Axisymmetric problem of which is having a radius of r, rot

1.	Consider an Axisymmetric problem of which is having a radius of r, rotational angle and length l. Then r dl d is known as ____
A.	Elemental volume
B.	Element
C.	Elemental surface area
D.	Elemental surface
Answer» D. Elemental surface