10. The radius of a hemispherical balloon increases from 6 cm to 12 cm as air is being pumped into it. The ratios of the surface areas of the balloon in the two cases is 10. The radius of a hemispherical balloon increases from 6 cm to 12 cm as air is being pumped into it. The ratios of the surface areas of the balloon in the two cases is July 3, 2021 Category: Chapter 13 - Surface Areas and Volumes , Maths , NCERT Class 9 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related
