mathematics lecture
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MATHEMATICS LECTURE19TH MARCH 2014
VOLUME OF CONE
FORMULA OF CONE
V=πr2 h/3
EXAMPLE
QUESTION 1
what is the volume of
this cone? ( π=3.142)
QUESTION 2
Given a cone with the height
of 10cm and the diameter of
the circle is 18cm. Find the
volume of this cone. Take π as
3.142.
SURFACE AREA
OF CONE
A=πr(r+√h2+r2)
A=AREA
r=RADIUS
h=HEIGHT
SURFACE AREA
OF TRAPEZOID
FORMULA OF TRAPEZOID
h(𝑎+𝑏)
2= 𝑇𝑆𝐴
H= height
(a+b) = total length of
parallel sides
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