Mathematics Geometric Lecture
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The mathematics lecture discussed formulas for calculating the volume and surface area of cones and trapezoids. The volume of a cone formula is V=πr^2h/3, and an example problem was worked through. The surface area of a cone formula is A=πr(r+√h^2+r^2). The surface area of a trapezoid formula is (a+b)h/2, where a and b are the lengths of the parallel sides and h is the height.
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Mathematics Geometric Lecture
- 1. MATHEMATICS LECTURE 19TH MARCH 2014
- 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.
- 13. FORMULA OF TRAPEZOID h (𝑎+𝑏) 2 = 𝑇𝑆𝐴 H= height (a+b) = total length of parallel sides