Question

Geometry


If a spherical ball is enlarged so that its surface area is 9 times greater than its original surface area, then the original radius was multiplied by _________.

Answer 1

area depends on radius^2 so if area is 9x greater, the radius should be....

Answer 2

9x larger too?

Answer 3

no

Answer 4

so 81 times?

Answer 5

area depends on radius^2 so in another word: radius depends on SQRT(area)

Answer 6

Sorry that really confused me, what you just said. Is the answer 81?

Answer 7

no

Answer 8

OK ignore my last post then if it is confusing...
area is 9x greater n it depends on radius^2....which means radius^2 is 9x greater too right?

Answer 9

yes i think so?

Answer 10

so radius is then ???x greater?

Answer 11

9 times?

Answer 12

3 times

Answer 13

okay so its the sqrt of 9

Answer 14

yes

Answer 15

great! ill put 3 thanks !

Answer 16

welcome