a solid toy is made from wood is in the shape of a right circular cylinder with two equal conical shapes to each of its ends and their common diameter is 3.5 cm and height of cylindrical and conical portion certain 10cm and 5 cm respectively find the volume of solid toy
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Answer:
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we have
volume of the solid toy = volume of the conical portion + volume of the cylindrical portion +volume of the hemispherical portion
=
3
1
πr
2
h+πr
2
h+
3
2
πr
3
=
3
1
π×(2.1)
2
×7+π×(2.1)
2
×12+
3
2
×π×(2.1)
3
=
3
1
π×(2.1)
2
×47.2cm
3
=
7
22
×0.7×2.1×47.2cm
3
=218.064cm
3
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