Length of a side, possible triangle side

[Tsroll]

I have one question that has me stumped as well as my Father in-law, sister in-law and my accountant friend.

I wasn't sure if I was supposed to create a right triangle and use A² + B² = C²

Problem 18. B.

 

[Deleted member 4993]

I have one question that has me stumped as well as my Father in-law, sister in-law and my accountant friend.

I wasn't sure if I was supposed to create a right triangle and use A² + B² = C²

Problem 18. B.

Yes - that would be one way to do it.

A = 30.263/2 + 7

B = 17.823 - √[(18.09)² - (30.263/2)² ]

 

[Tsroll]

Yes - that would be one way to do it.

A = 30.263/2 + 7

B = 17.823 - √[(18.09)² - (30.263/2)²

So your saying B is 7.909 if you take it to the 3rd decimal place.

That isn't A² + B² = C² is it? I can figure it out when you put it in the formula, just having a hard time grasping where the formula comes from.

Edit: Well I see it is A² + B² = C²
I guess my brain is just having a hard time with it.

 

[Deleted member 4993]

To the corner: incomplete bracketing...:shock:

Thanks Denis... I fixed it before lookagain saw it. However - heading for the corner (it is kind of dusty now)....