The radius of hemispherical balloon increases from 6cm to 12 cm as air is being pumped into it. The ratio of the surface areas of the balloons in two cases is

The radius of a hemispheircal balloon increases from 6 cm to 2 cm is air is being pumped into it. The ratio of the surface areas of the balloons in two cases is

The radius of a hemispherical balloon increases from 6 cm to 12 cm as air is being pumped into it. The ratios of the surfcae area of the balloom in the two cases is

The radius of a hemispherical balloon increases from 6 cm to 12 cm as air is being pumped into it. The ratios of the surfcae area of the balloom in the two cases is

The radius of a spherical balloon increases from 7 cm to 14 cm as air is being pumped into it. The ratio of surface area of the balloon in the two cases is :

The radius of a spherical balloon increases from 7 cm to 14 cm as air is being pumped into it. Find the ratio of surface areas of the balloon in the two cases.

The radius of a spherical balloon increases from 7 cm to 14 cm as air is being pumped into it. Find the ratio of surface areas of the balloon in the two cases.

The radius of a spherical balloon increases from 7cm to 14cm as air is being pumped into it.Find the ratio of surface areas of the balloon in the two cases.

The radius of a spherical balloon increases from 7 cm to 14 cm as air is being pumped into it. Find the ratio of surface areas of the balloon in the two cases.