NCEA 1 MATHS FORMULA

Formulas required for ncea 1 exam 91947

Area of a triangle

½ x b x h

Area of a parallelogram

b x h

Area of a trapesium

½ x (a+b) h (a +b are the lengths)

Area of a circle

Pi r²

Circumference of a cirle

2piR

Volume of a prism

Area of cross section x l

Volume of a cylinder

pi r² x h

Volume of a sphere

¾ pi r³

Volume of a pyramid

1/3 x area of base x h

Volume of a cone

1/3 pi r² h

Volume of a cuboid

h x w x l

Pythag. theorum

a² + b² = c² (square root of c² = c)

Sin x

opp / hypotenuse

cos x

adj / hypotenuse

tan x

opp / adj

Hectare

10000m²

litre

1000cm³

mililitre

1cm³

Average speed

distance / time

Sum of internal angles of an n-sided polygon

(n - 2) x 180

Definition of bearings

“Bearings are measured from North, in a clockwise direction”