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Question Bookmark In a circle of radius 5 cm , AB and AC are two chords such that AB = AC = 6 cm . Find the length of the chord BC . Easy Solution verified Verified by Toppr AB and AC are two equal chord of a circle, therefore the centre of the circle lies on the bisector of ∠BAC. OA is the bisector of ∠BAC. Again, the internal bisector of an angle divides the opposite sides in the ratio of the sides containing the angle. P divides BC in the ratio 6:6=1:1. P is mid-point of BC. OP ⊥ BC. In △ ABP, by pythagoras theorem, AB 2 =AP 2 +BP 2 BP 2 =36−AP 2 ....(1) In △ OBP, we have OB 2 =OP 2 +BP 2 5 2 =(5−AP) 2 +BP 2 BP 2 =25−(5−AP) 2 .....(2) From 1 & 2, we get, 36−AP 2 =25−(5−AP) 2 36=10AP AP=3.6cm Substitute in equation 1, BP 2 =36−(3.6) 2 =23.04 BP=4.8cm BC=2×4.8=9.6cm

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Its Deep 2 years, 7 months ago

9.8cm

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A circle of 30cm diameter has a 24cm chord what is the distance of the chord from the center

Posted by Kavitha Raghavendra 2 years, 7 months ago

CBSE > Class 09 > Mathematics

2 answers

Priyanshu Soni 2 years, 7 months ago

Good question

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Garima Chaudhary 2 years, 7 months ago

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Define chord and diameter

Posted by Kenchappa. G Kenchappa. G 2 years, 7 months ago

CBSE > Class 09 > Mathematics

1 answers

Renu T 2 years, 7 months ago

The line segment of the circle is chord The chord, which passes through the centre of the chord is the diameter

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Q1. The total surface area of a cube is 726 cm2. Find the length of its edge.

Posted by Yash Chaudhari 2 years, 7 months ago

CBSE > Class 09 > Mathematics

3 answers

Abhi Bhardwaj 2 years, 7 months ago

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Ayush Kumar 2 years, 7 months ago

11 cm

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Yash Yadav 2 years, 7 months ago

11 cm

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Factorise x3+1/x3-z

Posted by Devansh Dwivedi 2 years, 7 months ago

CBSE > Class 09 > Mathematics

0 answers

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If a+b = 2and ab= a²+b²what is the value of a²+b²

Posted by Arpit Bhardwaj 2 years, 7 months ago

CBSE > Class 09 > Mathematics

1 answers

Mohini Pal 2 years, 7 months ago

A2+b2+2ab

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X+2-2(a+b)

Posted by Arsh Mia 2 years, 7 months ago

CBSE > Class 09 > Mathematics

1 answers

Arpit Bhardwaj 2 years, 7 months ago

X+2-2a+2b

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Finally tests are over !

Posted by K_Hushii 🍁 2 years, 7 months ago

CBSE > Class 09 > Mathematics

4 answers

Sanket .........✨ 2 years, 7 months ago

Same yr 10 - 15 din baad final ! Aur abhi chl rhe h test

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Xoxo .. 2 years, 7 months ago

So tumne mujhe aur sanket ko jo maths science ke questions diye vo konse hai?

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K_Hushii 🍁 2 years, 7 months ago

All but ab final start hone wale h 15- 20 din baad ?

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Xoxo .. 2 years, 7 months ago

Which subject

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The angels of quadrilateral are in the ratio 3:5:9:13. Find all the angles of the quadrilateral

Posted by Ayodhyaprasadkesharwani Kesharwani 2 years, 7 months ago

CBSE > Class 09 > Mathematics

2 answers

K_Hushii 🍁 2 years, 7 months ago

Sry 3x+5x+9x+13x =360

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K_Hushii 🍁 2 years, 7 months ago

Let the angle be x, 3x+5x+9x+13x = 180, 30x =360, x= 360/30= 12, 3×12= 36, 5×12=60, 9×12 =108, 13×12 =156

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✓8476

Posted by Harrsa Harris 2 years, 7 months ago

CBSE > Class 09 > Mathematics

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Q-1 prove that a diagonal of a parallelogram divides it into two congruent triangles. Q-2 how many sq metres of canvas is required for a conical tent whose height us 3.5m and the radius of whose base is 12m. Q-3 find the (i) CSA and (ii) TSA if the hemisphere of radius 21cm. Q-4 if two parallelogram PQAD and PQBC are on the opposite sides of PQ, prove that ABCD is a parallelogram. Q-5 the outer CSA of hemisphere and sphere are in the ratio 2:9. Find the ratio of their radii. Q-6 four students of your class of different faith hindu, muslim, sikh, and christian bond a human chain like a quadrilateral of sides 12cm, 5cm, 12cm, 5cm and angle between the sides 12cm and 5cm is 90°.(i) name the type of quadrilateral. (ii) what assumption will be arrived from this activity? Q-7 an aquarium in a DDA park is of hemispherical structure, and the radius is 2.1km (i) calculate the TSA .(ii) what ideas are being promoted here? Q-8 a class room is 7m long, 6.5m wide and 4m high. It has one door 3m×1.4m and three windows each measuring 2m×1m. The interior walls are to be colour washed. The contractor charges ₹5.25per m^2. Find the cost of colour washing. ( lo sanket maths ke question I hope practice ke liye inte bhaut h )

Posted by K_Hushii 🍁 2 years, 7 months ago

CBSE > Class 09 > Mathematics

5 answers

K_Hushii 🍁 2 years, 7 months ago

okkk

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Xoxo .. 2 years, 7 months ago

Yes I want of science.. please

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Xoxo .. 2 years, 7 months ago

Khushi please help me with 2nd term questions of 3 mark and 4 mark of science from 2nd term question paper for practice.. please friend..

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Xoxo .. 2 years, 7 months ago

Yes science ke bhi 2nd term ke questions send Karo please

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K_Hushii 🍁 2 years, 7 months ago

Science ke bhi chahiye ?

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Zero of the polynomial p x is equal to a z plus b minus c coma z is not equal to zero is option a c minus b upon main option b a minus b upon a option c a minus b upon a option d b minus b minus a upon AC

Posted by Sanjana Choudhary Choudhary 2 years, 7 months ago

CBSE > Class 09 > Mathematics

0 answers

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X⁴-2x³+3x²-ax+b (x+1) and ( x-1) are factors

Posted by K A 2 years, 7 months ago

CBSE > Class 09 > Mathematics

1 answers

Ayush Kumar 2 years, 7 months ago

(x+1)

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Chapter 8 theorem 8.2 and 8.3

Posted by Khushboo Mulchandani 2 years, 7 months ago

CBSE > Class 09 > Mathematics

2 answers

Khushboo Mulchandani 2 years, 7 months ago

What is this pls anyone give me answer as fast as you can

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Mannatdeep Kaur Marwaha 2 years, 7 months ago

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Find the value of a25_a15 for the Ap:6,9,12,15.......

Posted by Salma Gulabsha 2 years, 7 months ago

CBSE > Class 09 > Mathematics

1 answers

Salma Gulabsha 2 years, 7 months ago

Class 10

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Draw a line segment of 6.4 cm and divide it into the four equal parts

Posted by Shashwat Yadav 2 years, 7 months ago

CBSE > Class 09 > Mathematics

1 answers

Humaira Ayub 2 years, 7 months ago

First you will draw a line measuring 6.4cm then draw a perpendicular on it, the perpendicular will devide it into two equal parts. Now, take the one part again draw a perpendicular on it do the same thing on another part of the line. Hence the line will devide into two equal parts.

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Is anything exempted from ch 2 class 9

Posted by Parth Agarwal 2 years, 7 months ago

CBSE > Class 09 > Mathematics