Question

Quadrilateral PQRS is a rectangle. What is the length of PR?



A. 7
B. 14√2
C. 14√3
D. 28

Answer 1

@ciara_xo It's C. Do you need the solution? :)

Answer 2

sure that'd be nice !

Answer 3

i have a question w. the same diagram but its asking the length for PR..the choices are 7 , 19.799 ,
24.249 , 28

Answer 4

if you wouldnt mind helping w. that too.

Answer 5

@ciara_xo You need to remember to formulas if you're dealing with a 30-60-90 triangle.\[c=2a\]\[b=a ^{3}\]

Answer 6

i mean PQ*

Answer 7

For the second question, since you know that PR is C in the diagram I drew and c=2a, 2 x 14 = 28. 28 is the answer. :)

Answer 8

PQ is \[14\sqrt{3}\] and in decimal, that is 24.249. That's the answer.

Answer 9

hmm i am getting PR = 28

Answer 10

wait im confused

Answer 11

Why?

Answer 12

sin 30 = 14/PR

PR = 14/sin 30
= 14/1/2
= 28

Answer 13

check if we have setup the 30-60-90 triangle correctly

Answer 14

It's alright not to use trigonometry. It's a special triangle after all. :)

Answer 15

@ciara_xo What part are you confused?