12.3 notes
Upcoming SlideShare
Loading in...5
×
 

Like this? Share it with your network

Share

12.3 notes

on

  • 230 views

 

Statistics

Views

Total Views
230
Views on SlideShare
230
Embed Views
0

Actions

Likes
0
Downloads
0
Comments
0

0 Embeds 0

No embeds

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

12.3 notes Presentation Transcript

  • 1. BellworkGet a dodecahedron and icosahedron from the back table.Find the surface area of each.Turn in bellwork to homework bin.
  • 2. Regular Pyramids: 12.3 Surface Area ***before you can find the SA of a regular pyramid, you must first identify the shape of the base and how to find the perimeter of the base vertex S.A. = ½Pl + B Slant Height (l )a lt it u d e ( h where b is the area of the base) or a S.A. = ½P(l + a) Base one-half perimeter of the base * the sum of the slant height and apothem
  • 3. Find the surface area of each regular pyramid. 5cm 10 cm base altitude is 6.9cm a 8 cm 7 cm
  • 4. Find surface area.13 in 5 in 7.3 in
  • 5. Cones: S.A. = πr + r 2 πl area of the base + r*pi*slant height Slant Height r
  • 6. Find the surface area of each cone. 2.6 yd 3.2 cm 6.4 yd 1.4 cm
  • 7. Find the surface area of the solid. 5 ft 5 ft 3 ft
  • 8. 12.3 HW pg. 814#4-24 evens