Question

What are the general formulas for finding C. S. A ,T. S. A and Volume of 3 D shapes

Answer 1

HEY MATE "

MULAS FOR PERIMETER, AREA, SURFACE, VOLUME
Rectangle
Area = Length X Width
A = lw
Perimeter = 2 X Lengths + 2 X Widths
P = 2l + 2w
Parallelogram
Area = Base X Height
A = bh
Perimeter = add the length of all sides
P = 2a + 2b
Triangle
Area = 1/2 of the base X the height
A =


bh
Perimeter = a + b + c
(add the length of the three sides)
Trapezoid
Area = 1/2 of the base X the height
A = (

)h
Perimeter = add lengths of all sides
P = a + b1 + b2 + c
Circle
Radius = the distance from the center
to a point on the circle (r).
Diameter = the distance between two
points on the circle through the center (d
= 2r).
Circumference = the distance around
the circle (C = d = 2r).
(Assume  ≈ 3.14)
Area = r
2
Rectangular Solid
Volume = Length X Width X Height
V = lwh
Surface = 2lw + 2lh + 2w
Prisms
Volume = Base X Height
V = bh
Surface = 2b + Ph (b is the area of the
base P is the perimeter of the base)
Cylinder
Volume = r
2 X height
V = r
2 h
Surface = 2 radius X height
S = 2rh + 2r
2
Pyramid
Volume = 1/3 area of the base X height
V =

bh
b is the area of the base
Surface Area: Add the area of the base
to the sum of the areas of all of the
triangular faces. The areas of the
triangular faces will have different
formulas for different shaped bases.
Cones
Volume = 1/3 area of the base x height






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