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| Thread ID: 100186 | 2009-05-29 06:12:00 | Working out the area of a quadrilateral | Jen (38) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 777890 | 2009-05-29 07:17:00 | I did it differently. I split it into two triangles. The lower triangle can be calculated easily. And you can use SOHCAHTOA to find the missing angles and side. Then using Herons Formula (en.wikipedia.org) to find the area of the top triangle. |
bob_doe_nz (92) | ||
| 777891 | 2009-05-29 07:24:00 | Bah. I got A+ at my Uni applied maths classes and would've loved to have given the answer! Too bad... good on ya all for giving Jen the answer she needed. :) |
Greg (193) | ||
| 777892 | 2009-05-29 07:35:00 | I did it differently. I split it into two triangles. The lower triangle can be calculated easily. And you can use SOHCAHTOA to find the missing angles and side. Then using Herons Formula (en.wikipedia.org) to find the area of the top triangle. Exactly how I solved it. Currently one of the math wizzes at my school:D |
Blam (54) | ||
| 777893 | 2009-05-29 09:53:00 | x2 for bob_doe_nz's method, having recently gotten NCEA Level 1. :D Can't be bothered solving it though :p |
pcuser42 (130) | ||
| 777894 | 2009-05-29 10:47:00 | Another method that doesn't use much maths is to draw the shape to scale on graph paper and count up the number of squares/part squares. The result is pretty close to the mathematical answer and I've used it for calculating land areas. Martynz |
martynz (5445) | ||
| 777895 | 2009-05-29 21:49:00 | Exactly how I solved it. Currently one of the math wizzes at my school:D Its an american trait to skite about how good you are. Its not really acceptable behavior in New Zealand. |
prefect (6291) | ||
| 777896 | 2009-05-29 22:42:00 | Exactly how I solved it. Currently one of the math wizzes at my school:D Is that because your asian or you been held back a few years |
plod (107) | ||
| 777897 | 2009-05-29 22:45:00 | Its an american trait to skite about how good you are. Its not really acceptable behavior in New Zealand. Meh - I say bring on competition in the education system. If it encourages kids to excel, rather than just pass, then that's a good thing. This politically correct 'no child should fail' nonsense will destroy the country's future. As a country we already do plenty of skiting - schools brag all the time about having the best rugby team, the best NCEA results, etc. |
somebody (208) | ||
| 777898 | 2009-05-29 23:28:00 | Never heard of Heron's formula, I thought they just walked in water and ate fish | gary67 (56) | ||
| 777899 | 2009-05-30 01:10:00 | Is that because your asian or you been held back a few years I'm Asian.:lol::p |
Blam (54) | ||
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