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# Mathematics lecture

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### Mathematics lecture

1. 1. MATHEMATICS LECTURE 19TH MARCH 2014
2. 2. VOLUME OF CONE
3. 3. FORMULA OF CONE V=πr2 h/3
4. 4. EXAMPLE
5. 5. QUESTION 1
6. 6. what is the volume of this cone? ( π=3.142)
7. 7. QUESTION 2
8. 8. 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.
9. 9. SURFACE AREA OF CONE
10. 10. A=πr(r+√h2+r2) A=AREA r=RADIUS h=HEIGHT
11. 11. SURFACE AREA OF TRAPEZOID
12. 12. FORMULA OF TRAPEZOID h (𝑎+𝑏) 2 = 𝑇𝑆𝐴 H= height (a+b) = total length of parallel sides
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