4*22/7*r*r=1848
1848*7=4*22*r*r
12936=88*r2
r=12936/88
r=147
r=12.12
2/3*22/7*12.124*12.124*12.124=V
V=3734.3cm2
知面积,求体积.the surface area of a hemisphere is 1848cm2 .find it
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