Do Now: Express the area, A, of an equilateral triangle as a function of its sides. - PowerPoint PPT Presentation

rooney-carpenter
slide1 n.
Skip this Video
Loading SlideShow in 5 Seconds..
Do Now: Express the area, A, of an equilateral triangle as a function of its sides. PowerPoint Presentation
Download Presentation
Do Now: Express the area, A, of an equilateral triangle as a function of its sides.

play fullscreen
1 / 8
Download Presentation
Do Now: Express the area, A, of an equilateral triangle as a function of its sides.
469 Views
Download Presentation

Do Now: Express the area, A, of an equilateral triangle as a function of its sides.

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Do Now: Express the area, A, of an equilateral triangle as a function of its sides.

  2. What is the relationship between the radius of the base and the height of a cone? Let’s observe some things that are true about this diagram: Congruent Triangles: height Similar Triangles: As a result, we may set up the following proportion: Ex) A water tank has the shape of a right circular cone with its vertex pointing down. The radius, r, of the top is 2 ft and the height, h, of the tank is 8 ft. Express the volume of the water in the tank as a function of its depth.

  3. PRIMARY SECONDARY Write the radius in terms of h and substitute that radius into the volume equation to get the volume equation in terms of h as well. Ex) A water tank has the shape of a right circular cone with its vertex pointing down. The radius, r, of the top is 2 ft and the height, h, of the tank is 8 ft. Express the volume of the water in the tank as a function of its depth (height).

  4. Functions Worksheet #4-6 4. A water tank has the shape of a right circular cone with its vertex pointing downward. The radius of the top is 3 ft., and the height of the tank is 12 ft. Express the volume of the water in the tank as a function of its depth.

  5. 5. The vertical cross sections of a conical water tank are isosceles right triangles. Express the volume of the water in the tank as a function of its depth. Vertical Cross Sections: A vertical slicing of a cone creating 2 isos. right triangles. The vertical cross sections of a cone are the triangles that are formed when you slice a cone vertical starting from the tip of the vertex; when you open the cone and look at it head-on you see, in this case, 2 Isosceles right triangles. PRIMARY SECONDARY

  6. 6. The vertical cross sections of a conical water tank are equilateral triangles. Express the volume of the water in the tank as a function of its depth. Vertical Cross Sections: A vertical slicing of a cone creating 2 equilateral triangles. SECONDARY PRIMARY

  7. FINISH WORKSHEET: #7, 8, 9

  8. REIVEW OF FUNCTION APPS: A rectangle is bounded by the x-axis and the semi-circle A Write the area of the rectangle as a function of x and determine the domain of the function. What if the question said that the rectangle is inscribed in the entire circle?