Home › UP Board Class 10 › Mathematics › Surface Areas and Volumes › The radii of two spheres are in the ratio 2 : 3.…
The radii of two spheres are in the ratio 2 : 3. The ratio of their volumes is
A8 : 27
B4 : 9
C2 : 3
D16 : 81
Answer & Solution
Correct answer: A. 8 : 27
1. Volume scales as radius cubed.
2. (2/3) cubed = 8/27.
3. Hence 8 : 27.
_Source: NCERT Class 10 Mathematics, Ch 12 "Surface Areas and Volumes", §12.2_
Related questions
Painting the outside of a toy needs to be worked out from its:Breaking a hard problem into solved smaller ones is the method:A cylindrical tube with a rounded end is a cylinder with a:Pouring a liquid into a container of another shape keeps its:Joining two solids at their flat faces hides those faces:Which solid is not among the basic ones met earlier?The word frustum comes from Latin, meaning a piece:The two circular ends of a frustum have radii that are: