Content on this page requires a newer version of Adobe Flash Player.

Get Adobe Flash player

Hot Line :01730445602
Recent General Knowledge
SL Name of the figure Perimeter, area and volume Nomenclature
1 Triangle Perimeter = a+b+c,
Area = ½ b×h
B is the base and
H is heights
a, b and c are the sides of the triangle
2 Right angled triangle Perimeter = b+h+d
Area = ½ b×h
3 Equilateral triangle Perimeter = 3a
Area = (i) ½ a×h
= (ii) √3/4 a²
a = side
h = altitude
4 Rectangle Perimeter = 2(a+b)
Area = ab
a = length
b = breadth
5 Square Perimeter = 2a
Area = a² sq. units
a = side
6 Parallelogram Perimeter = 2(a+b)
Area = ah
a = side
b = side adjacent to a
h = distance between parallel sides
7 Rhombus Perimeter = 4a
Area = ½d1d2
A=side=½√(d12+d22)
d1, d2 = diagonals
8 Trapezium Perimeter = Sum of 4 sides
Area = ½h(a+b)
a, b = parallel sides
h = distance between parallel sides
9 Quadrilateral Perimeter = Sum of 4 sides
Area = ½(AC)(h1+h2)
AC = diagonal
h1,h2 = altitudes on AC
10 Circle Circumference = 2πr
Area = πr²
r =radius
11 Cuboid Total Surface = 2(lb+bh+hl)
Volume = lbh
l = length
b = breadth
h = height
12 Cube Total Surface = 6a²
Volume =A3
a = edge
13 Right circular cylinder Total Surface = 2πr(h+r)
Volume =π r²h
r = radius of the base
h = height of the cylinder
14 Right circular cone Total Surface = πr(l+r)
Volume =1/3 π r²h
r =radius
L = slant height
h = height
15 Sphere Total Surface = 4πr²
Volume =4/3π r3
r =radius
16 Hemisphere Total Surface = 3πr²
Volume =2/3π r3
r =radius