Find the area

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Originally Posted by newracer

You need to know an angle.

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Sounds like I'm going to have to start measuring the height on each parallelogram then.

Ask one of those fancy college-educated millennials. They have a really solid understanding of simple math, right? #FeelingTheBern #NoWait... #ThatsJustTearGasInMySafeSpace

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Originally Posted by HoneyBadger

Ask one of those fancy college-educated millennials. They have a really solid understanding of simple math, right? #FeelingTheBern #NoWait... #ThatsJustTearGasInMySafeSpace

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Good idea! When the adjuster says, "Hey, can you get me the total square footage in the next few minutes so I can settle this on site?"
I'll just say, "Just have the government do it, man. The homeowner should do their fair share of math man."

:D

34.333 * 37 = 1270.321


If the measurements are not wrong (which, geometry says they are in my mind), then you need to account for the gap between the 6.333 and the 7.5 measurement (1.17' * 13.583)... Don't see how it can be 34.333 on one side of the rectangle and 33.333 on the other, but have 6.333 and 7.5 offsets -- there is .17 missing somewhere.
13.583 * 1.17 = 8.867


1270.321 - 8.867 = 1261.454


What am I missing? Its just a simple box.

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Originally Posted by Irving

That is probably pretty close. If anyone on here knows a way to determine the area of a parallelogram with only knowing the perimeter, I'm listening.

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"A parallelogram is a 4-sided shape formed by two pairs of parallel lines. Opposite sides are equal in length and opposite angles are equal in measure. To find the area of a parallelogram, multiply the base by the height."

Quote:

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Originally Posted by asmo

34.333 * 37 = 1270.321


If the measurements are not wrong (which, geometry says they are in my mind), then you need to account for the gap between the 6.333 and the 7.5 measurement (1.17' * 13.583)... Don't see how it can be 33.333 on each side of the rectangle, but have 6.333 and 7.5 offsets.
13.583 * 1.17 = 8.867


1270.321 - 8.867 = 1261.454


What am I missing? Its just a simple box.

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Just think of a birds eye view sketch of a pyramid, where you have all the measurements of the eaves (base) and all the hips (ridges) going to the top. You couldn't just take the b x h of the perimeter measurements for the total area. You'd have to measure the area of each triangle individually, then add them together.

Quote:

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Originally Posted by Irving

Just think of a birds eye view sketch of a pyramid, where you have all the measurements of the eaves (base) and all the hips (ridges) going to the top. You couldn't just take the b x h of the perimeter measurements for the total area. You'd have to measure the area of each triangle individually, then add them together.

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You are asking for the surface area of the full pyramid in that case, of which the measurement of the base would only give you one side (the bottom/base). I see what you are saying, but I thought that was what you were asking for.

Yeah maths!

Just so there is no confusion, I'm not trying to Huck Finn anyone into doing my work for me. I just got to thinking about the way I was measuring and wanted to see if the information I had obtained was enough to accurately calculate the surface area of the roof. Turns out that there isn't enough info and I'll have to change my method up a bit. Always striving to improve right?

Maybe once Bernie Sanders is elected, I can get him to outlaw hip roofs, especially on rich people's homes.

Pie are square? I thought pie were round...

51 Square of shingles, round up to 54 to account for waste...

Cut the Triangle in half to figure ridge height using a^2 + b^2 = c^2 method for right triangles.

17’ x 17’ x 25’5” Triangle
23’5” = 23.416’ / 2 = 11.708’
17^2 – 11.708^2 = 151.915
SQRT(151.915) = 12.325’ = Eve to Ridge Height (lower ridge)

12.325 * 11.708 = 144.306 sq ft (17’x17’ x 25’5” Triangle)

Use similar method to figure other ridge heights.