Question

If each edge of a cube is doubled,
(i) how many times will its surface area increase?
(ii) how many times will its volume increase?
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Answer 1

Step-by-step explanation:

i)LET THE EDGE BE 4

original surface area = 6(4)²= 96m²

if edge is doubled , edge is 8

new surface area = 6(8)²= 6*64= 384m²

So, it increases by 4 times.

ii) LET THE EDGE BE 4.

original volume = 4³= 64m³

if edge is doubled , edge is 8m

new volume = 512m³

So, it increases by 8 times.