1. MATHEMATICS LECTURE
19TH MARCH 2014

2. VOLUME OF CONE

3. FORMULA OF CONE
V=πr2 h/3

4. EXAMPLE

6. QUESTION 1

7. what is the volume of
this cone? ( π=3.142)

8. QUESTION 2

9. 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.

10. SURFACE AREA
OF CONE

11. A=πr(r+√h2+r2)
A=AREA
r=RADIUS
h=HEIGHT

12. SURFACE AREA
OF TRAPEZOID

13. FORMULA OF TRAPEZOID
h
(𝑎+𝑏)
2
= 𝑇𝑆𝐴
H= height
(a+b) = total length of
parallel sides