Question

please answer it fast​

Answer 1

Answer:

its answer is 1:4

Step-by-step explanation:

First the radius of the balloon = 6 cm

Second the radius of the balloon = 12 cm.

Now,

Surface Area of a hemisphere

= 3*pi*radius ^2

So

The ratio of the surface areas will be

= 3*pi*(6)^2 : 3*pi*(12)^2

= 6^2 : 12^

= 36 : 144

= 1 :4

hope it helps u dear....

Answer 2

Answer:

here is your answer

hope it helps you