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What is playfairs axiom

Posted by Piyush Priyadarshi 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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Ad is the bisector of angle a find the measure angle b a d

Posted by Yuvraj Singh 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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Divesh Thakur 7 years, 4 months ago

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I face a lots of problem in solving geometry what i do to score good marks

Posted by Aditya Rishi 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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The side of a quadrangular field,taken in order 26 cm, 27 cm, 7 cm and 24 cm respectively. The angle contained by the last two sides is a right angle. Find its area

Posted by Sadanand Jha 7 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 7 years, 4 months ago

Here the length of the sides of the quadrilateral is given as
AB = 26 m, BC = 27 m, CD = 7 m, DA = 24 m
Diagonal AC is joined.
Now, in triangle ADC
By applying Pythagoras theorem

AC²=AD²+CD²<amp-mathml data-formula="\[AC^{2} = AD^{2}+CD^{2}\]" inline="" layout="container"></amp-mathml>

AC²=24²+7²<amp-mathml data-formula="\[AC^{2} = 14^{2}+7^{2}\]" inline="" layout="container"></amp-mathml>

AC = 25 m

Now area of triangle ABC

Perimeter = 2s = AB + BC + CA

2s = 26 m + 27 m + 25 m

s = 39 m

By using Herons Formula

The area of a triangle = √ s×(s−a)×(s−b)×(s−c) <amp-mathml data-formula="\[\sqrt{s\times (s-a)\times(s-b) \times(s-c) }\]" inline="" layout="container"></amp-mathml>

= √ 39×(39−26)×(39−27)×(39−25)<amp-mathml data-formula="\[\sqrt{39\times (39-26)\times (39-27) \times (39-25)}\]" inline="" layout="container"></amp-mathml>

= 291.84m²<amp-mathml data-formula="\[291.84m^{2}\]" inline="" layout="container"></amp-mathml>

Thus, the area of a triangle is 291.84m²<amp-mathml data-formula="\[291.84m^{2}\]" inline="" layout="container"></amp-mathml>

Now for area of triangle ADC

Perimeter = 2s = AD + CD + AC

= 25 m + 24 m + 7 m

s = 28 m

By using Herons Formula

The area of a triangle = √ s×(s−a)×(s−b)×(s−c)<amp-mathml data-formula="\[\sqrt{s\times (s-a)\times(s-b) \times(s-c) }\]" inline="" layout="container"></amp-mathml>

= √ 28×(28−24)×(28−7)×(28−25)<amp-mathml data-formula="\[\sqrt{28\times (28-24)\times (28-7) \times (28-25)}\]" inline="" layout="container"></amp-mathml>

= 84m²<amp-mathml data-formula="\[84m^{2}\]" inline="" layout="container"></amp-mathml>

Thus, the area of a triangle is 84m²<amp-mathml data-formula="\[84m^{2}\]" inline="" layout="container"></amp-mathml>

Therefore, Area of rectangular field ABCD

= Area of triangle ABC + Area of triangle ADC

= 291.84 + 84

= 375.8 m²

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Want to give online test on chapter rational number

Posted by Priya Bhargav 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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Sampe papet for class 9 website is www.topperlearning.com

Posted by Khushi Khushi 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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Adit Shah 7 years, 4 months ago

Numder system

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Find the area of an isoceles right angled triangle,whole base is 30 cm

Posted by Ay K 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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Ay K 7 years, 4 months ago

Please explain

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Himanshi Upadhyay 7 years, 4 months ago

The area of this triangle is 1125 square.

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Maths basic ques

Posted by Lovenish Suman 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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Simplify 243 raise to 4 upon five

Posted by Pruthviraj Pawar 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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Shreeya Gupta 7 years, 4 months ago

(3)*5×4/5=(3)*4=81

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POQ is a line.Ray OR is perpendicular to line PQ.OS is another ray lying between rays OP and OR.Prove that ANGLE ROS =1/2 (angle QOS-angle POS

Posted by Saksham Vyas 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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What is Area of quadrilateral

Posted by Rani Thakre 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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Anmol Prasad 7 years, 4 months ago

Area of rectangle = l×b. Area of square =s^2. Area of rhombus =1/2×product of two diagonals. Area of parallelogram =b×h. Area of trapezium =1/2×height ×sum of parallel sides

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Locate root 10 on number line

Posted by Sreenivasulu Beemgutla 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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124853%*54258=42

Posted by Ritik Mudgal 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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Posted by Ritik Mudgal 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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2x +9=0 as an equaction

Posted by Jai Jaiswal 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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Prashansa Rastogi 7 years, 4 months ago

It is-9/2

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Vratika Rajesh Bawangade 7 years, 4 months ago

-9/2

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(625)^0.16*(625)^0.09

Posted by Jyotiraditya Khatua 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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What is linear pair? Explain with examples.

Posted by Simran Malpotra 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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Prashansa Rastogi 7 years, 4 months ago

The pair who make 180 degree is known as linear pair

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Viren Jadhav 7 years, 4 months ago

Linear pair means a straight line having two angles making 180 degree is called linear pair

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(102) square 2

Posted by Vimal Kumar 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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(a+b)^10=

Posted by Harsh Raj 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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How much pure alcohol added to 400ml of a 15 percent solution to make its strenghth 32 percent

Posted by Harsh Yadav 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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Express 23.434343......in p by q form

Posted by Arpita Kalhapure 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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Asmita Sharma 7 years, 4 months ago

Let x=23.434343....(1) Then 100x=2343.434343..(2). On subtracting 1 from 2 We get 99x= 2320 X=2320/99.

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AreA and perimetre of all type of quadriteral

Posted by Digvijay Dane 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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The polynomia

Posted by Manvir Singh Mavi 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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draw the graph of the line x minus Y is equal to 1 and 2 X + Y equal to 8.shade the area formed by these two lines and the y-axis full stop also find the this area

Posted by Abhinav Jha 7 years, 4 months ago

CBSE > Class 09 > Mathematics

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Asmita Sharma 7 years, 4 months ago

(1) x_y=1 Y=x_1 On putting x=1 Then y=0 If x=2,y=1 If x=3, y=2 (2)2x+y=8 Y=8_2x If x=2, y=4 If x=3, y=2 If x=4,y=0 Now draw the figure by yourself through this x and y. Now AtoQ Let shaded area name ABC then base ofabc=bc=9 Height=3 Area=1/2×b×h = 13.5 sq unit answer .

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41x÷57x

Posted by Kanishka Babal 7 years, 4 months ago

CBSE > Class 09 > Mathematics