measurements

circles

arcs

sectors

A = ( θ / 360 ) / π r ^ 2

circumference C = 2 π r

A = π r ^ 2

surface area

sphere

cone

cylinder

A = 2 π r h + 2 π r ^ 2

A = 4 π r ^ 2

A = π r s + π r ^ 2

radian measurements

volume

cone

sphere

pyramid

V = 1 / 3 A h

V = 1 / 3 π r ^ 2 h

V = 2 / 3 π r ^ 3

capacity

1000 cm ^ 3 = 1000 m = 1 L

1 m ^ 3 = 1000 dm ^ 3 = 1000 L = 1000 kL

arc length

l = sieta * r