Please help me fast...

 

What is the volume of a hemisphere with a diameter of 8.9 cm, rounded to the nearest tenth of a cubic centimeter?     

 

V_sphere  =  (4 / 3) • π r³       so the volume of a hemisphere would be half of that.     

 

V_hemisphere  =  (2 / 3) • π r³     

 

V  =  (2 / 3) • (3.1416) • (4.45 cm)³     

 

V  =  184.5609 cm³     rounded to a tenth  =  184.6 cm³     

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