Asked by  | 27th Jan, 2009, 08:15: PM

Expert Answer:

external diameter=30 cm

 So external radius =15 cm

Thickness =2cm

So internal radius = external radius - thickness =15-2=13 cm

So volume of copper in the  hemispherical  solid=external volume - internal volume


Find this quantity, it'll be  in cu cm.

Multiply this by 7, as it's given that 1 cu cm of copper weighs 7 gm.

That will be the final answer.






Answered by  | 28th Jan, 2009, 10:01: AM

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