If the surface area of two spheres is in the ratio 81 : 25, then what is the ratio of their radii.
Answer & explanation
Correct answer: option 4
Area 81 : 25
∴ Radii 9 : 5 *(radii ratio = \(\sqrt {area\;ratio}\))
The ratio of their radii = 9 : 5
If the surface area of two spheres is in the ratio 81 : 25, then what is the ratio of their radii.
Correct answer: option 4
Area 81 : 25
∴ Radii 9 : 5 *(radii ratio = \(\sqrt {area\;ratio}\))
The ratio of their radii = 9 : 5