**FORMULAS RELATED TO SURFACE AREA AND VOLUME**

**CUBOID**:*l*, breadth =*b*and height =*h*units. Then

*Volume*= (*l*x*b*x*h*) cubic units.*Surface area*= 2(*lb*+*b h*+*l h*) sq. units.*Diagonal*=under root(*l*^{2}+*b*^{2}+*h*^{2)}units

**CUBE**:*a*. Then,

*Volume*=*a*^{3}cubic units.*Surface area*= 6*a*^{2}sq. units.*Diagonal*= under root of 3*a*units.

**CYLINDER**:*r*and Height (or length) =*h*. Then,

*Volume*= (*r*^{2}*h*) cubic units.*Curved surface area =*(2*rh*) sq. units.*Total surface area*= 2*r*(*h*+*r*) sq. units.

**CONE***r*and Height =*h*. Then,

*Slant height,**l*=*h*^{2}+*r*^{2}units.*Volume*=*r*^{2}*h*cubic units.*Curved surface area*= (*rl*) sq. units.*Total surface area*= (*rl*+*r*^{2}) sq. units.

**SPHERE :***r*. Then,

*Volume*=*r*^{3}cubic units.*Surface area*= (4*r*^{2}) sq. units.

**HEMISPHERE :***r*. Then,

*Volume*=*r*^{3}cubic units.*Curved surface area*= (2*r*^{2}) sq. units.*Total surface area*= (3*r*^{2}) sq. units.