Area and Perimeter
Square:
p = L + L + L + L
A = L x L
Rectangle:
p = L + w + L + w
A = L x w
Triangle:
p = s + s + s
A = b x h
2
Rhombus:
p = s + s + s + s
A = b x h
A parallelogram is a figure where opposite sides are parallel to each other regardless of how many sets of sides the figure has (square, hexagon, etc). A rhombus is a parallelogram with four sides in which the two pairs of opposites sides are congruent.
Parallelogram:
p = s + s + s + s
A = b x h
Trapezoid:
p = s + s + s + s
A = (a + b)h
2
Circle:
C = πd (or) C = 2πr
A = πr²
Note: The value of π is 3.1415926
(to 7 decimal places)
Sphere:
A = 4πr²
V = 4πr³
3
Cone:
Area: Will need to calculate the surface area of the cone and the base.
SA = πrs + πr
V = 1πr²h
3
Cylinder:
Surface area: We will need to calculate the surface area of the top, base and sides.
Area of top: A = πr²
Area of bottom: A = πr²
Area of side: A = 2πrh
Total surface area: A = 2πr² + 2πrh
V = πr²h
Rectangular Prism:
A = 2(wh + Lw + Lh)
V = Lwh
Pyramid:
A = 2bs + b²
V = 1b²h
3
Isosceles Triangular Prism:
A = bh + 2Ls + Lb
V = 1(bh)L
2
Square:
p = L + L + L + L
A = L x L
Rectangle:
p = L + w + L + w
A = L x w
Triangle:
p = s + s + s
A = b x h
2
Rhombus:
p = s + s + s + s
A = b x h
A parallelogram is a figure where opposite sides are parallel to each other regardless of how many sets of sides the figure has (square, hexagon, etc). A rhombus is a parallelogram with four sides in which the two pairs of opposites sides are congruent.
Parallelogram:
p = s + s + s + s
A = b x h
Trapezoid:
p = s + s + s + s
A = (a + b)h
2
Circle:
C = πd (or) C = 2πr
A = πr²
Note: The value of π is 3.1415926
(to 7 decimal places)
Sphere:
A = 4πr²
V = 4πr³
3
Cone:
Area: Will need to calculate the surface area of the cone and the base.
SA = πrs + πr
V = 1πr²h
3
Cylinder:
Surface area: We will need to calculate the surface area of the top, base and sides.
Area of top: A = πr²
Area of bottom: A = πr²
Area of side: A = 2πrh
Total surface area: A = 2πr² + 2πrh
V = πr²h
Rectangular Prism:
A = 2(wh + Lw + Lh)
V = Lwh
Pyramid:
A = 2bs + b²
V = 1b²h
3
Isosceles Triangular Prism:
A = bh + 2Ls + Lb
V = 1(bh)L
2