Perimeter = side length ×4 C=4a

Area = side length × side length S=a×a

2 cubic v: volume a: side length

Surface area = side length × side length× ×6 S Table =a×a×6

Volume = side length × side length × side length v = a× a× a.

3 rectangle c perimeter s area a side length

Circumference = (length+width) ×2 C=2(a+b)

Area = length × width S=ab

4 cuboid v: volume s: area a: length b: width h: height

Surface area (length× width+length× height+width× height )× 2s = 2 (AB+AH+BH)

Volume = length× width× height V=abh

5 triangle s area a base h height

Area = bottom × height ÷2 s=ah÷2

Height of triangle = area ×2÷ base of triangle = area ×2÷ height

6 parallelogram s area a bottom h height

Area = bottom × height s=ah

7 trapezoid s area a upper bottom b lower bottom h height

Area = (upper bottom+lower bottom) × height ÷2 s=(a+b)× h÷2.

8 circle s area c perimeter ∏ d= diameter r= radius

Circumference = diameter x ∏ = 2 x ∏× radius C=∏d=2∏r

Area = radius × radius ×∈