The Fencing Problem

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The Fencing Problem

Introduction

I am going to investigate different a range of different sized shapes

made out of exactly 1000 meters of fencing. I am investigating these

to see which one has the biggest area so a Farmer can fence her plot

of land. The farmer isnÂ’t concerned about the shape of the plot, but

it must have a perimeter of 1000 meters, however she wishes to fence

off the plot of land in the shape with the maximum area.

Rectangles

I am going to look at different size rectangles to find which one has

the biggest area.

Formula: Length x Width

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Table Of results

Length

Width

Area

0

500

0

50

450

22500

100

400

40000

150

350

52500

200

300

60000

250

250

62500

300

200

60000

350

150

52500

400

100

40000

450

50

22500

500

0

0

Conclusion

I have found that the four sided shape that had the biggest area when

using 1000 meters of fencing, was a square with the measurement of

250m x 250m and the area=62500m²

Isosceles Triangles

I am now going to look at different size Isosceles triangles to find

which one has the biggest area. I am going to use Pythagoras Theorem

to find the height of the triangle.

Pythagoras Theorem: a²=b²+c²

Formula To Find A Triangles Area: ½ x base x height

1. Base=100m Sides=450m

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a²=b²+c²

450²=b²+50²

202500=b²+2500

202500-2500=b²

200000=b²

Ö200000=b

447.2m=b

Area: ½ x b x h

½ x 100 x 477

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