Mensuration
9.Rhombus
Area = d1*d2
Perimeter = 4a
10.Kite
Area = d1*d2/2
Perimeter = 2 * sum of none adjacent sides
11.Cuboid
Surface area = 2( lb + bh + lh )
Volume = l*b*h
12.Cube
Surface area = 6l^2
Volume = l^3
Length of the diagonal of the cube = √3 l
13.Cylinder
Curved surface area = 2𝝅rh
Total surface area = 2𝝅r( r + h )
Volume =𝝅r^2h
14.Cone
Curved surface area =𝝅rl
Total surface area =𝝅r( l + r )
Volume = 1/3 𝝅r^2h
Area of base of a cone =𝝅r^2
15.Sphere
Surface area = 4𝝅r^2
Volume = 4/3 𝝅r^3
16.Hemisphere
Curved surface area = 2𝝅r^2
Total surface area = 3𝝅r^2
Volume = 2/3 𝝅r^3
17.Prism
Surface area of a triangular prism = ( p * ht ) + ( 2 * area of triangle )
where, P = Perimeter of base
18.Frustum of a Cone
Volume = 1/3 𝝅h( r1^2 + r2^2 + r3^2 )
Curved surface area =𝝅( r1 + r2 )*l
where l = √h^2 + ( r1 - r2 )^2
Total surface area of the frustum of the cone =𝝅l( r1 + r2 ) + 𝝅( r1^2 + r2^2 )
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