Sample Problems and Discussion of Area and Area of ​​Trapezoid

Sample Problem and Wide Range of Trapezoid - Before you look at the examples of the questions and discussions below, you should study the material How to Calculate the Formula of Wide and Trapezoidal Area first. Because to understand the discussion of the question to be given by The Basic Mathematical Formula in this article you must understand the basic concepts and formulas applicable to the circumference and extent of the trapezoidal

If you already feel mastered the material about the formula of the area and around the trapezoid please direct you see and observe the example about trapezium and how to answer the following
[194590]

Sample Exercise Area and Trapezoidal Range with Complete Discussion


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Example Problem 1

Determine the Area of ​​the trapezoid in the following image:

Sample and Discussion of Wide and Size of Trapezium "border =" 0 "src =" https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEik4hjSlu5pk44kwlbIB3aZuPBwvMdwqbz10IvpYQ15QYEm5YQ79KIBAwOV_EntGEWyl3kuJOq6wnevbekk02mU9IngvJLFE0SNG8qpEpVA6Zddl-gnHAT73ADmuRKLyQRHDbNRkUa-CfI/s1600/soal%25 2Btrapezium% 2B1.png "title =" Sample and Discussion Area and Range of Trapezoidal "> </div> <br /> </div> [19459<div class= [194590]
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From the picture above it is known that AD = CE = 8 cm while AB = CD = 12 cm. To know the extent of the trapezoid then we must know the length of BC first. The length of BC can only be overcome if the length of DE is known. To find the length of DE then we must use the following pythagoras theorem formula:

DE = √ (CD 2 - CE [(19459028)2 - 8 2 )
]
DE = √ (144 - 64)
DE = √208
DE = 14.4 cm

Since the above trapezoid is the same trapezoid foot, then:
BC = AD + 2 x DE
BC = 8 + 2 x 14.4
BC = 36.8 cm

New we seek extent by the formula:
Area = ½ x (A D + BC) xt
Area = ½ x (8 cm + 36.8 cm) x 12 cm

Area = 268.8 cm 2


Example Problem 2:
Compute the Area of ​​the following trapezoidal:

Sample and Discussion of Area and Area of ​​Trapezoid "border =" 0 "src = "Http:https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhHtr7zZ1NVQAqb60T__DJkBVKyWvrnYVEzDqzL-CHiIEK5R8btLFcSqYYf45s5sjvnvyxIGUMLfTSOZB4TcFQ3zAM83lc_easDwVICF5dUFiR-AbrpDoUmY7g1BBtfofqOGcJTUqT6u5k/s1600/soal+trapezium+2.png" title = "Sample and Discussion of Area and Range of Trapezoidal"> </div> <div class= Discussion:
From the trapezoidal image we can see that the length of QR = RS = 12 cm , Length PS = 14 cm and length TQ = 18 cm. To know the extent of the trapezoid we must know the length of PT first. Let us use the pythagoras theorem as follows:


PT = √ (PS 2 - RS 2 PT = √ (14 2 - 12 2 )
PT = √ (196 - 144)
PT = √52
PT = 7.2 cm

After the length of PT is known then we can search the length of PQ:
PQ = PT + TQ
[19459027PQ=72+18
PQ = 25.2 cm

Only after that We find the extent of the trapezoidal formula:

Area = ½ x (RS + PQ) xt
Area = ½ x (12 cm + 25.2 cm) x 12 cm

Area = 163.2 cm 2
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Example Problem 3:
Compute the area and circumference of The following trapezoidal

Sample and Discussion of Area and Range of Trapesium "border =" 0 "src =" http://1.bp.blogspot.com/-1eDlfYuW_gk/ VNMloD8M5zI / AAAAAAAAHQw / c2WM5TJKOws / s1600 / soal% 2Btrapesium% 2B3.png "title =" Sample Problem and Discussion Area and Range of Trapesium "> </div> <br /> <b> Discussion: </b> <br /> From Trapezoidal foot EFGH above known length EH = FG = HG = 20 cm. HI = 16 cm and EF = 2 x HG. <br /> <br /> EF = 2 x HG <br /> EF = 2 x HG <br /> EF = 40 <br /> <br /> Circumference = EF + FG + GH + HE <br /> Roving = 40 + 20 + 20 + 20 = 100 cm <br /> <br /> Area = ½ x (GH + EF) x HI <br /> Area = ½ (20 + 40) x 16 <br /> <br /> Area = 480 cm <sup> 2 </sup> <br /> <sup> <br /> </sup> </div> <div style=
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Articles of Basic Mathematical Formulas Concerning Sample Problems of Complete Area and Complete Trapezoidal Discussion . To add to your knowledge, see also the example of the question

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