##
__VOLUME OF SOLIDS__

**CUBOID - It has 6 panels and each panel is rectangular.**

**let length =**

*l*cm, width = b cm, height = h cm,

**(i) Cuboid volume = (**

*l*✕ b ✕ h ) Cubic Centimeter**(iii) Area of the entire surface of the cuboid = 2 (**

*l*b + bh +*l*h) square centimeter

**CUBE - It has 6 panels and each panel is square.**

**let side of the cube = a cm**

**(i) Cube volume = a ✕ a ✕ a Cubic Centimeter**

**(ii) Diagonal of cuboid = √3a cm**

**(iii) Area of the entire surface of the cuboid = 6 (a✕a) square centimeter**

**CYLINDER - Let the radius of the base of the cylinder = r cm**

**and height of the cylinder = h cm**

**(i) Volume of the cylinder = ( Ï€ r✕r h) Cubic Centimeter**

**(ii) Area of curved surface of cylinder = 2Ï€rh square centimeter**

**(iii) Area of the entire surface of the cylinder = ( 2Ï€rh + 2Ï€r✕r ) square centimeter**

**CONE - Let the radius of the base of the cone = r cm, height = h cm, and Oblique height =**

*l*cm**(iii) Area of curved surface of cone = Ï€r**

*l*square centimeter**(iv) Area of the entire surface of the cone = ( Ï€r**

*l*+ Ï€r✕r ) square centimeter

**SPHERE - Let radius of the sphere = r cm**

**(ii) Area of curved surface of sphere = (4Ï€r✕r) square centimeter**

**(iv) Area of curved surface of half-sphere = (3Ï€r✕r) square centimeter**

**FRUSTUM OF A CONE - Let the radius of base and vertex of Frustum of a cone R cm and r cm respectively. and height = h cm and Oblique height =**

*l cm*

**(iv) Area of the entire surface of the cone = ( base area ) + ( area of vertex ) + ( Curve surface area) square centimeter**

**= { Ï€R✕R + Ï€r✕r + Ï€**

*l*( R+r) } square centimeter**= Ï€{ R✕R + r✕r +**

*l*( R+r) } square centimeterðŸ‘‰

**Area of Rectangle, Square, Triangle, circle and more**

## 0 Comments