Question

The surface area of a rectangular prism is 150 cm². If all the sides are tripled, what will the new surface area be?

Answer 1

well volume = a b c

new volume = 3a 3b 3c

Answer 2

3*3*2=27

so
newarea=27*a b c

Answer 3

oops i mean newvolume

new volume will be 27 times bigger :O

Answer 4

Don't really get what you're saying

Answer 5

volume=a*b*c
a b and c are the sides

if you triple each side then
new volume=(3*a) * (3*b) * (3*c)

this can be rewritten using algebra as

newvolume=27 * (a*b*c)
( ) notice abc is your original volume.
so if you triple each side then the new volume = original volume *27

Answer 6

So I have to find the original volume?

Answer 7

is that what I have to do? or do I just multiply 150*3