Maths by Mr. M. P. Keshari

**Example 3. **If the radii of the circular ends of a bucket, 45cm high, are 28cm and 7cm, find the capacity of the bucket.

**Solution:- **Height, h = 45cm

Radius, R = 28cm

Radius, r = 7 cm

capacity of the bucket

= 1/3 X 22 X 45 X 7 X 21

= 48510 cm

^{3}

**Example 4.** A solid sphere of radius 3cm is melted and then cast into small spherical balls each of diameter 0.6cm. Find the number of small balls thus obtained.

**Solution:- **Let number of small balls be x

Volume of x small balls = Volume of sphere

Maths by Mr. M. P. Keshari

Subjects |
Maths (Part-1) by Mr. M. P. Keshari |

Chapter 9 |
Circle |

Chapter 10 |
Tangents to a circle |

Chapter 11 |
Geometrical Construction |

Chapter 12 |
Troigonometry |

Chapter 13 |
Height and Distance |

Chapter 14 |
Mensuration |

Chapter 15 |
Statistics |

Chapter 16 |
Probability |

Chapter 17 |
Co-ordinate Geometry |