Question

In triangle PQR = 7.2 and = 5.2. Which measure cannot be ?
Answer

A) 7

B) 9

C) 11

D) 13

Answer 1

SOMEONE PLEASE HELP ME

Answer 2

I think you left something out there - what equals 5.2?

Answer 3

are 7.2 and 5.2 two sides of the triangle?

Answer 4

QR= 5.2 @harrypotter5777

Answer 5

OK. And they want to know which of those can't be the third side?

Answer 6

PQ= 7.2

Answer 7

yeah

Answer 8

ok. Imagine you hold down the 7.2 side on a table, and the 5.2 side can swing around in a circle.

Answer 9

No matter how far it reaches, even if it's pointing right at the other end of the 7.2 side, it won't be able to reach it.

Answer 10

and if the other side is 2 or smaller, it doesn't matter if they're pointing right at each other - they can't reach. So the third side has to be at least 2.

Answer 11

but if that has to be at least 2 then what would the answer be because it looks like non of them could be

Answer 12

right. Now you have to find the biggest it could be.

Answer 13

Think about what would happen if the 7.2 side and the 5.2 side got far apart as they could. They'd never be able to get more than 12.4 units apart, even if they were pointed in opposite directions.

Answer 14

So could they ever connect to something that was 13 units long?

Answer 15

ohhh nooo so side PR cannot be 13 because they cant get more than 12.4 units apart?

Answer 16

omg I understand this question now thanks a lot for helping its because I added the two sides together to get 12.4 and it couldnt possibly be 13 because the highest it went on the other side was 12.4 thank you!!

Answer 17

sure!