Question

if each side of cylinder is doubled then find the no. of times its vol increases

Answer 1

Answer:

how many sides does a cylinder have?

Step-by-step explanation:

vol-pi.r2.h

vol2-pi.4r2.2h

vol:vol2=1:8

hence it becomes 8 times

Answer 2

Think about how many dimensions for “area”. It is two. Volume requires three dimensions. Now this might be over-simplifying but the question posted is an elementary academic problem so the simple explanation follows:

For each dimension “doubled”, that is going to multiply the area by two. Since it would not be a cube anymore if just one edge (or dimension) is doubled, all edges must be doubled. That is all three. Area, being two dimensions, is multiplied by a factor of 2×2 = 4 sq. units.

As a side note, the cube's volume is muliplied by a factor of 8 (that is 2x2x2).