Question

how will the surface area of cube change if the length of its edge is: doubled

Answer 1

Answer:

the surface are will be increased by four times

Step-by-step explanation:

let us assume the length of edge of cube 1 unit

therefore,

                 surface area  of one side is 1 unit sq

                 total surface are will be 6 unit sq

when the edge is double

length of edge = 2 unit sq

therefore,

               surface area of one side is 4 unit sq

                total surface area is 24 unit sq

comparison

total surface area before : total surface area after doubling

= 6:24

= 1:4

therefore it is increased by four times