Answers

2014-03-05T02:02:51+05:30
The radius is 7 m.
the volume is 718.6666667 ~ 718.67 m³
2 3 2
2014-03-05T09:25:33+05:30
3 rupees needed to whitewash 1 m2 area
1 rupees needed to whitewash 1/3 m2 area
924 rupees needed to whitewash (1/3) x 924 = 308 m2 area.

So, the area of the hemisphere is 308 m2 = 2πr^2

the eq > 
2πr^2 = 308 m2
             => r^2 = (308/2π) = 49.01
             => r = 7m (ans 1)

so  the radius is 7 m than the Volume will be =>

2/3 x π x r^3 = 2/3 x π x (7)^3 = 718.37 m^3 (ans 2)









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