Ratio of surface area of a sphere and a hemi sphere is

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08 Sep 2009 Surface Area Ratio of surface area of a sphere and a hemi sphere is: OPtion
1. 3:4
2. 2:1
3. 1:1
4. 1:2
5. 4:3
6. 4:5
7. 5:4
8. 4:1
9. 1:4
10. 3:2; Correct Option: 5 Best Solution (2)

Dolly 14 years AGO

Total surface area of a Sphere... 4 pi r^2
Total surface area of a hemisphere..... 3* pi*r^2

so ratio is 4:3

Like? Yes (1) | No

sujit 14 years AGO

surface area of a sphere=4 pi r*r
radius of hemisphere = 2 pi r*r + pi r*r
(lateral surface area + surface area of the flat surface)

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Dimple

India

Punjab

Time: 00:01:33

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