CBSE > Class 09 > Mathematics | CBSE Board | Homework Help

20 marks - one words one marks each. 15-20 marks - short type l 2 marks each. 3 marks 5 questions of short type ll. 10 marks long questions 5 mark of 2 questions. & Best of luck for exams?

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In figure ppqrs is a square where p lying outside the circle x is a point intersected on circle of side pq and y on ps .prove px=py

Posted by Abhinav Rai 4 years, 11 months ago

CBSE > Class 09 > Mathematics

2 answers

Rehan Sheikh 4 years, 11 months ago

(99)

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Anushka Mallick 4 years, 11 months ago

Where is the diagram???

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Monica has a piece of Canvas whose area is 551m .she used it to have a conical tent made with base of radius of 7m assuming that all the stitching margins and the wastage in required whil cutting amount to approx to 1m metre square find the volume of tentthat can be made within it

Posted by Techno Help In Hindi 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Rishi Chawla 4 years, 11 months ago

359.33 meter cube

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Factorise ~ x³+1/x³-2

Posted by Ravi Shroff 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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The blood group of 30 Students of class vlll are recorded as follow

Posted by Seema Nekhar 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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7.5 mcq

Posted by Isac Lalrinpuia 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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Cheak whether 7 +3x is a factor of 3x3 +7x

Posted by Rohit Bansal 4 years, 11 months ago

CBSE > Class 09 > Mathematics

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If the radius of a sphere is increased by 10%. By what percentage the volume will increase

Posted by Khushi Sharma 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 4 years, 11 months ago

Let radius of sphere is 100 unit

now volume of sphere {tex}=4/3pi.(r)^3{/tex}

volume of sphere={tex}4/3pi.(100)^3{/tex}
=4/3pi.1000000 cubic unit

a/c radius increased by 10%

so , new radius =100+100x10/100=110unit

hence volume of new sphere=4/3pi(110)^3=4/3pi.1331000cubic unit

difference their volume=4/3pi.331000cubic unit

percentage increase=volume difference/volume of sphere
=(4/3pi.331000/4/3pi.1000000)x100
=33.1%

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The total surface area of cube 1176 centimetre square find its volume

Posted by Vinod Kumar 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Yogita Ingle 4 years, 11 months ago

Let the side of a cube = a cm

It is given that ,

Surface area of the cube = 1176 cm²

6a² = 1176

a² = 1176/6

a² = 196

a = √ 196

a = 14 cm

Therefore ,

Volume of the cube = a³

V = ( 14 cm )³

V = 2744 cm³

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The total surface area of cube square find the value

Posted by Vinod Kumar 4 years, 11 months ago

CBSE > Class 09 > Mathematics

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The measure of each side of an equilateral triangle whose area is √3cm is

Posted by Dfgh Vhnn 4 years, 11 months ago

CBSE > Class 09 > Mathematics

2 answers

Pujan Patel 4 years, 11 months ago

Yes

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Anand Dwivedi 4 years, 11 months ago

2cm because area of equilateral triangle is √3×S²/4 ;√3×S²/4=√3cm² ;S²/4=√3cm²/√3 ;S²/4= 1cm² ;S²=4×1cm² ;S²=4cm² ;√S²=√4cm² ;S=2cm

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2xcube -kx squar +7x-1 divided by x-2 leaves the remainder 5

Posted by Joy Kumar 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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cbse samble paper 1

Posted by Naresh Kumar 4 years, 11 months ago

CBSE > Class 09 > Mathematics

2 answers

Vinod Kumar 4 years, 11 months ago

Your social teacher is not good teach

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Harsh Raj 4 years, 11 months ago

Yes

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What is the formula for area of equilateral triangle when side is given but height is not given

Posted by Asifa Naaz 4 years, 11 months ago

CBSE > Class 09 > Mathematics

3 answers

Balaraju Goud 4 years, 11 months ago

√s(s_a)(s_b)(s_c)

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Priyansh Vats 4 years, 11 months ago

1/2 base . height

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E Verma 4 years, 11 months ago

√3/4 a2

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ABC is a right angled at C. Let BC=a,CA=b,AB=c and let p be the length of perpendicular from C on AB .Prove that PC = ab .

Posted by Shaik Maqsood 4 years, 11 months ago

CBSE > Class 09 > Mathematics

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Class 9 ch 13.1 question no7

Posted by Sakshi Roy 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Neelkamal Sharma 4 years, 11 months ago

2184

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If two circles intersect at two points , prove that their centre lie on the perpendicular bisector of the common chord .

Posted by Lauv Kumar 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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What is the area of isoceles ∆

Posted by Mahima Pateriya 4 years, 11 months ago

CBSE > Class 09 > Mathematics

6 answers

Pratima Rai 4 years, 11 months ago

(√3\4)a^2

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Priyansh Vats 4 years, 11 months ago

1/2 b.h

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Anshman Modi 4 years, 11 months ago

We also use Heron's furmula S=A+B+C/2 a=√a(s-a)(s-b)(s-c) Where S=semi peeimeter

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Johnjam Jim 4 years, 11 months ago

1/2×base×height

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Rakhi Vasodiya11 4 years, 11 months ago

1/2×base×height

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Mahima Pateriya 4 years, 11 months ago

a/4√4a2-b2

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Something more about Cicrle

Posted by Aditya Singh 4 years, 11 months ago

CBSE > Class 09 > Mathematics

0 answers

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22/7 is a irratinal number as π is a irrational number

Posted by Devesh Jain 4 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Sam Samadder 4 years, 11 months ago

no, 22/ 7is rational as it is in the form p/q where p,q are integers and q is not 0. 22/7 is an approximate value of pi

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Muje maths samaj nhi ata

Posted by Snehu Pachauri 4 years, 11 months ago

CBSE > Class 09 > Mathematics

2 answers

Snehu Pachauri 4 years, 11 months ago

Muje plzzz starting se math padao me hardwork krne ko Ready hu

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Hariom Dalal 4 years, 11 months ago

To puccho na jo bhi doubt h. Hum yaha aaphi help ke liye hi to h, koi bhi doubt ho to sirf pucho. We all are with you. My best wishes, God bless you please par workhard . All the best ?

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In the given figure pqrs is a parallelogram having base PQ is equal to 6 cm and perpendicular height is also 6 cm find the area of triangle ptq

Posted by Sneha Soni 4 years, 11 months ago

CBSE > Class 09 > Mathematics