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what is zero

Posted by Saif Khan 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Piyush Agrawal 8 years, 4 months ago

answer

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One side of a right triangle measure 126 m and the difference in lengths of its hypotenuse and other is 42 m find the major of its 2 unknown slides and calculate its area verify the result using herons formula

Posted by Aishwarya Mohanty 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Rajeev Malhotra 8 years, 4 months ago

Let h= 126m and base = b m and Hypotenuse = h m

By pythagorous therem, we have h² = b² + (126)²

h² -b² = (126)²

(h+b)(h-b) = (126)²

It is given that h-b = 42 m

(h+b)*42= 126*126

h+b = 126*126/42

h+b= 3*126 = 378.....(1)

h-b = 42.....(2)

Adding eq(1) and (2), we get

2h= 420

h = 420/2=210m

Now h-b= 42

210-b =42

b= 210-42= 168m

Area = b*h/2

A= 168*126/2

A= 10584 m²

a=126m ,b=168m and c= 210m

s= a+b+c/2 = 126+168+210/2 = 504/2=252m

A = √s(s-a)(s-b)(s-c)

A= √252.(252-126)(252-168)(252-210)

A= √252*126*84*42

A= 10584m²

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Prove that 'If in a quadrilateral, if each pair of opposite angles are equal then it is a parallelogram'

Posted by Nagaraj G T Uppar 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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What is corrosponding side

Posted by Prabahv Jain 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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Perimeter of semi circle

Posted by Yashash Singla 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Ayush And Anjali Raghav 8 years, 4 months ago

1/2 pie × d + d

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1234+1234

Posted by Raj Agrahari 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Ankush Sharma 8 years, 4 months ago

2468

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Prove that the line joining mid point of opposite of quadrilateral bisect each other.

Posted by Nitish Kumar 8 years, 4 months ago

CBSE > Class 09 > Mathematics

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ABCD IS PARALLELOGRAM AND LINE SEGMENT AX AND CY BISECT ANGLE A AND C SHOW THAT AX PARALLEL TO CT

Posted by Yashovardhan Singh 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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2ab×2ab

Posted by Anubhav Raj Srivastav 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Pranav Mishra 8 years, 4 months ago

4a*2b *2

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Define congruent triangle

Posted by Shiva Choutha 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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Want to construct an equiletral triangle given its side and justify the construction

Posted by Satwik Awasthi 8 years, 4 months ago

CBSE > Class 09 > Mathematics

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The area of trapezium is half the product of its height and the sum of parallel sid

Posted by Ajay Barak 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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What is the fullform of mathematics

Posted by Nitin Malik 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Sia ? 4 years, 10 months ago

full form of MATH is “Mathematics“

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If one side of a cyclic quadrilateral is produced then exterior angle is equal to Intersector opposite angle

Posted by Harpreet Kaur 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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Rhombus

Posted by Rishabh Tiwari 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Rajeev Malhotra 8 years, 4 months ago

Rhombus is a parallelogram in which all four sides are equal.

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What is rhombus

Posted by Rishabh Tiwari 8 years, 4 months ago

CBSE > Class 09 > Mathematics

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Formula - surface area of sphere. Plz tell me fast .

Posted by Shrishti Pawar 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Mansi Gupta 8 years, 4 months ago

4πr square

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the cost of tv was quoted rate 20000 at the beggining of the year 2000. in the beggining of 2001 the price was hiked by 5% because of decrease in demand. the cist was reduce by 4% n the beggining of 2002. what is the cost of tv in 2002?

Posted by Tr Sir 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Rajeev Malhotra 8 years, 4 months ago

Cost of TV in the begining of 2000 = 20,000

In the begining of 2001, the cost was hiked by 5 % . So cost of TV in 2001 = 20,000*105/100 = 21,000

Now cost is reduced by 4 %. So cost of TV in 2002 = 21000*96/100 = 20160

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The surface area of the cuboid 1372cm^2. If the dimensions are in the ratio 4:2:1, find its length

Posted by Pragadhis Pragadhis 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Rajeev Malhotra 8 years, 4 months ago

The surface area of cuboid = 2(l*b + b*h+l*h) and dimensions are 4x,2x and x

1372 = 2(4x*2x+ 2x*x+ 4x*x)

1372= 2(8x² + 2x² +4x²)

1372=2(14x²)

1372= 28 x²

x² = 1372/28= 49

x = 7 cm

So Length = 4 x = 4*7 = 28 cm

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The surface area of a cuboid is 1372cm^2. If the dimensions are in the ratio

Posted by Pragadhis Pragadhis 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

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Surface area and volume

Posted by Vivek Vishwakarma 8 years, 4 months ago

CBSE > Class 09 > Mathematics

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Give the solution of theory triangle on same base and between parllel line have equal area

Posted by Deepak Saini 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

Aryan Parmar 8 years, 4 months ago

Ggv

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What is remainder theorem or factor theorem ???

Posted by Subiya Seraj 8 years, 4 months ago

CBSE > Class 09 > Mathematics

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Formula of area of cuboid

Posted by Naman Trehan 8 years, 4 months ago

CBSE > Class 09 > Mathematics

1 answers

The Devil Prince 8 years, 4 months ago

Total surface area -. 2(lb +bh+hl). Lateral surface area -2h(l+b)????

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Solve -2(x+3)=5

Posted by Ben Xosh 8 years, 4 months ago

CBSE > Class 09 > Mathematics

2 answers

Rajeev Malhotra 8 years, 4 months ago

2(x+3) =5

2x+6 = 5

2x = 5-6

2x = -1

x =-1/2

x = -0.5

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Anshu Garg 8 years, 4 months ago

-5.5

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If xandy are midpoint of dc and bc then prove that area axy=3/8 area parallelogram abcd .

Posted by Animesh Kumar 8 years, 4 months ago

CBSE > Class 09 > Mathematics

0 answers

ANSWER

Is bar 9th ka exam kaise -kya hoga detail me bataye. Kaise questions aayege kis method me aayege ? Please i request to you jldi reply de ... Or aise tarike se bataye ki mujhe smjh aa jaye accha se Please send me fast NOTE :-- humko all sub ke bare me Janna h

Posted by Amit Kumar 8 years, 4 months ago

CBSE > Class 09 > Mathematics

3 answers

Alpana Negi 8 years, 4 months ago

You can download syllabus of math from our site myCBSEguide.com.

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Aditi Verma 8 years, 4 months ago

see 9 th ka exam easy hoga ya tough ye to hm pr aur hmare hard work pr depend krta h . questions sections me ayenge jaise sec 1 me 1 mark questions sec 2 me 2 marks sec 3 me 3 mark and sec 4 me 4 marks{sec means section sorry for inconvenience} i hope apko smjh to pkka aaya hoga thx

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Swatantra Tyagi 8 years, 4 months ago

Swatantra

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Factorize ( a-b)3+(b-c)3+(c-a)3

Posted by Raushan Kumar Kumar 8 years, 4 months ago

CBSE > Class 09 > Mathematics