Question

A cube has a side of 3 units. If each side is doubled, how has the total area changed?
is it :two times larger ,four times larger,six times larger or, eight times larger

Answer 1

I suggest finding the area of a cube for 3 and 6, then comparing the answers

Answer 2

the surface area or the volume?

Answer 3

@janett77 did you try @kymber's suggestion?

Answer 4

is it two times larger
the answer

Answer 5

2^2 = 4

Answer 6

i'd say 4 times.

Answer 7

@AriPotta thanks

Answer 8

The point they are trying to get you to see is that while doubling a side makes the side twice as long (duh!!!) it actually makes the area 4 times larger, not just double.

Answer 9

"area of a cube" i'm not quite sure what it means. if it was surface area, then yea, 4 times. but if it meant volume, then it would be 2^3 = 8. 8 times for volume

Answer 10

no, it's surface area... but the fact that it is a cube shouldn't matter. The surface area of each face gets 4 times bigger if you double a side. Total surface area = 6 x surface area of one face. So total surface area also gets 4 times larger when side lengths are doubled.

Answer 11

i know that, but all it said was "area". squares have area. cubes have surface area and volume. you can see where i was a bit confused...and i did say that if it was surface area, it would be 4 times, 8 times for volume.

Answer 12

You were right... I didn't mean you were wrong on it... just clarifying what I thought the question was asking. When it said "total area", I am pretty sure they meant surface area. But I wish these questions would be better written... too much chance of confusion.