P (3, 2) Q (7, 2) R (7, 4) The coordinates of points P, Q, and R in the xy-plane are given above. What is the perimeter of triangle PQR ? (A) 12 (B) 14 (C) 10.47 (D) 11.66 (E) 12.81

Show/Hide Answer


Choice C Level of Difficulty E M H A quick sketch of this triangle (which is absolutely necessary) will reveal a right triangle with legs of length 2 and 4. The hypotenuse is easily determined to be the square root of 20 using Pythagorean's Theorem. The perimeter, by definition, is the sum of the lengths of the three sides, giving an answer of 10.47, or choice C.

For more practice on triangle problems, go to Skill Set 8: Triangles. Our SAT tutors can help you become very proficient with all types of math SAT questions.

Earn 5% cash for every purchase you refer.

Latest News

Read All News
April 20, 2021

New subject available! Quantitative Methods

Hey students!  24HourAnswers.com is proud to annouce that we've added another topic to our Business subject area. You can now receive online tutoring for Quantitative Methods. You can learn more about Quantitative Methods at https://www.24houranswers.com/subjects/Business/Quantitative-Methods.   -24HourAnswers team
April 12, 2021

$500 College Scholarship Deadline

Just a reminder to our students and website visitors that the deadline for the Spring semester scholarship is May 1st. To learn more about applying, please visit our blog.  https://www.24houranswers.com/blog/75/24HourAnswers-500-Scholarship  
Live Chats