TOK (Theory of Knowledge) Mensuration
Mensuration In this Chapter, we are going to recap the basic knowledge regarding “Mensuration". The following descriptions are summarized for preparation of past paper practice and if you do not know something, you can contact us. Area Rectangle - $l \times b$, where l=length, b=breath Trapezium - $\frac 12 (a+b)h$, where a=length of one parallel side, b= length of the other parallel side, h= height between parallel sides. Kite - $\frac 12 a \times b$, where a and b are diagonals. Triangle - $\frac 12 \times bh$, $\frac 12 ab \times sin\angle C$ The Circle Circumference = $\pi d$= $2\pi r$, where d= diameter, r= radius, $\pi$=3.142…. Area = $\pi r^2$ Arc Length and sector area $A= \frac {\theta}{360}\times \pi r^2$ $l=\frac{\theta}{360} \times 2 \pi r$ , where l=arc length Chord of a circle Chord = AB The Shaded Region = minor Segment The unshaded Region (whole circle except minor segment) = major segment In $\odot...
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