mathematics lecture
TRANSCRIPT
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MATHEMATICS LECTURE
19TH MARCH 2014
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VOLUME OF CONE
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FORMULA OF CONE
V=πr2 h/3
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EXAMPLE
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QUESTION 1
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what is the volume of this cone? ( π=3.142)
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QUESTION 2
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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.
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SURFACE AREA OF
CONE
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A=πr(r+√h2
+r2)
A=AREAr=RADIUSh=HEIGHT
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SURFACE AREA OF TRAPEZOID
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FORMULA OF TRAPEZOID
h
H= height
(a+b) = total length of
parallel sides
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