tentukan volume masing²bola,jika: a. jari- jari=14cm b.jari-jari=17,5cm c.diameter=21dm

a.V=4/3×π×r'''
=4/3×22/7×14×14×14
=4/3×22/7×2744
=4/3×8624
=11498,66cm'''
b.V=4/3×π×r'''
=4/3×3,14×17,5×17,5×17,5
=4/3×3,14×5359,375
=4/3×16828,4375
=22437,916cm'''
c.V=1/6×π×d'''
=1/6×22/7×21×21×21
=1/6×22/7×9261
=1/6×29106
=4851 dm'''

maaf kalo sala