Volume of prism
Volume of cylinder
Area of cross-section x length
Area of circle [x2]x length
Arc length
Theta/360x 2piR
Sector area
Theta/360 x pi R squared
Area of a circle
Pi R squared
Circumference of circle
2piR
Units of length
1km = 1000 m 1m = 100 cm 1cm = 10 mm
Units of area
1km squared = 1000m x 1000m
= 1.000.000m squared
1m squared = 100 x 100 cm = 10.000cm squared
Volume
1km cubed = 1000m x 1000m x 1000m
1m squared = 100cm x 100cm x 100cm
Capacity
1 litre = 100cl
1 litre = 1000ml
1litre = 1000 cm cubed
Simple interest
I= PRT/100 A = I + P
Compound interest
A = P x (1 + R/100) to the power of t I = A - P
Rate of flow
Volume/time