Maths Geometry and Mensuration
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24 Terms
circumference of a circle
2πr or πd
area of a circle
πr²
arc meaning
a part of the circumference of a circle
arc length meaning
a measurement of a part of the circumference of a circle, given the angle of the sector
sector meaning
a part of a circle created by two radii and an arc
subtended angle meaning
an angle within a circle that is created by two chords meeting a point on the circumference of a circle
area of a square and rectangle
l×w
area of a trapezium
1/2(a+b)h
area of a parallelogram
base x height
area of a kite
1/2d1d2
area of a rhombus
1/2d1d2
surface area
2(lw)+2(hl)+2(wh)
curved surface area of a cone
πrl
total surface area of a cone
πrl + πr²
curved surface area of a cylinder
2πrh
total surface area of a cylinder
2πrh + 2πr²
curved surface area of a sphere
4πr²
ml to cm³
1mL = 1cm³
L to cm³
1L = 1000cm³
volume of a prism
area of a cross section × length of the prism
volume of a pyramid
1/3 x area of base x height
volume of a sphere
4/3πr³
arc length formula
2πr (m⁰/360⁰)
arc length formula (radians)
rθ
Note 
Flashcards (22)