7.5 Conversion of Solids from one shape to another with no change in Volume · Part 7

cone is m and the perimeter of circular ends are m and m. Find the cost of painting its curved surface area at ` per sq. m. . A hemi-spherical hollow bowl has material of volume p cubic cm. Its external diameter is cm. Find its thickness. . The volume of a cone is cu. cm. The area of its base is sq. cm. Find the slant height of the cone. . A metallic sheet in the form of a sector of a circle of radius cm has central angle of °. The sector is made into a cone by bringing the bounding radii together. Find the volume of the cone formed. Points to Remember Solid Figure Curved surface Area / Lateral surface Area (in sq. units) Total surface Area (in sq. units) Volume (in cubic units) Cuboid h l lb bh lh l h ´ ´ Cube a Right Circular Cylinder h l p rh p r h p r h Right Circular Cone h p rl l h l = slant height rl r l p r h Sphere p r p r p r Hemisphere p r p r p r Hollow cylinder h p R r h p ( R R h −+ p R h Hollow sphere R p R = outer surface area p R p R Hollow hemisphere R p R p R p R Frustum of right circular cone h R p R r l ) where l h R R r l R + p r p h R Rr       ICT CORNER Step : Open the Browser type the URL Link given below (or) Scan the QR Code. GeoGebra work book named “Mensuration _X” will open. Select the work sheet “Cone-Cylinder relation” Step : In the given worksheet you can change the radius and height of the cone-Cylinder by