Using Pythagoras theorem, we get AB2 = AO2 + OB2 . 1 = sjh2 + r2 l2 = h2 + ralt; where / is the slant height, h is the height and r is the radius of the cone. 19.7 Surface Area of a Right Circular Cone Activity: (i). CHAPTER 19: SURFACE AREASanbsp;...

Title | : | Secondary CBSE Mathematics-I |

Author | : | Suranjan Saha, Sabita Saha |

Publisher | : | Allied Publishers - |

Continue