in the in the figure solid consists of a cylindrical section of length 6.5 metre and surmounted by a cone at one end and a hemisphere at the other end given that common radius is 3.5 CM and total height of a solid is 12.8 CM. find the volume of solid
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Answer:
Height of core =12.8−6.5−3.5=2.8 cm
Volume =Volume of cone + Volume of Cylinder +Volume of a hemisphere
=31×722×(r)2×h+722×(r)2×h+32×722×(r)3
=31×722×(3.5)2×2.8+722×(3.5)2×6.5+32×722×(3.5)3
=35.93+250.25+89.83
=376.01 cm 3