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Lecture Comments (5)

0 answers

Post by Peter Ke on October 10, 2015

For the 2nd example how did you know that 8.48 is equal to 6squareroot"3"?
How did you convert it?

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Post by Omar Neamatullah on November 29, 2013

Should we leave the answer as 2-Pi or should we multiply it out and write it out as 6.28 (Considering this is one of the grid-ins)?  

2 answers

Last reply by: Harpreet Singh
Sat Apr 20, 2013 10:17 AM

Post by Kavita Agrawal on March 11, 2013

I think the first Learn by Example problem is wrong; you said the answer was 2(pi), but it should be 2(pi)+ 8; this is because the problem is asking for the perimeter of each quarter circle, not the length of the arc.

Area and Perimeter on the SAT

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • SAT Problems on Area and Perimeter 0:11
  • Learn by Example: Perimeter of a Quarter Circle 2:50
  • Learn by Example: Area of the Unshaded Region 4:26
  • Learn by Example: Perimeter of a Square Inscribed in a Circle 10:03
  • Learn by Example: Using Pythagorean to Get Side Lengths 13:23