Further Maths stuff Flashcards
1
Q
if eating x
A
too separate bits
2
Q
if eating number
A
enclosed
3
Q
area of a sector
A
x/360 x area of circle
4
Q
length of arc
A
x/360 x circumference of full circle
5
Q
area if parallelogram
A
base x height
6
Q
area of trapezium
A
1/2 (a+b) x h
7
Q
surface area of a cone
A
3.14xrxl + 3.14xr2
8
Q
surface area of a cylinder
A
2x3.14xrxh + 2x3.14xr2
9
Q
volume of prism
A
cross sectional area x length
10
Q
volume of a cylinder
A
3.14 x r2 x h
11
Q
circle theorems
A
a tangent and a radius meet at 90
the perpendicular bisector of a chord passes through the centre of the circle
the angle at the centre of a circle is twice the angle at the circumference
the angle in a semi-circle is 90
the angles in the same segment are equal
opposite angles in a cyclic quadrilateral add up to 180
alternate segment theorem
