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

Given height=14cm CSA of the cylinder=88sqcm. Now ,the csa of the right circular cylinder is =2πrh So 2πrh also =csa Now,2×22/7×r×14=88 88r=88 r=88/88 r=1cm. Now the diameter =2r Sothe radius will be =2cm.....

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Exercise 13.5 6th Q of class 9

Posted by Manna Sara Santhosh 6 years ago

CBSE > Class 09 > Mathematics

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Construct a triangle XYZ in which angle y =30 angle z=90 and XY+YZ+ZX=11cm

Posted by Dipesh Sharma 6 years ago

CBSE > Class 09 > Mathematics

2 answers

Shivam Raj 6 years ago

How can I contruct a traingle on this platform as there is no option to draw.So please u search this question on google or youtube

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Ammar Mansuri 6 years ago

You can check the anwer in You tube in the channel Vidhya Vision Institute

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A matchbox measures 4cm ×2.5cm×1.5cm what will be the volume of a packet containing 12 such bpxes

Posted by Karuna Agg 6 years ago

CBSE > Class 09 > Mathematics

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Draw different pairs of circle. How many points does each pair have in common? What is the maximum number of common points?

Posted by Abhijeet Kumar 6 years ago

CBSE > Class 09 > Mathematics

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How many spherical lead shots each 4.2 cm in diameter can be obtained from a rectangle solid of lead with dimensions 66cm ,42cm and 21 cm (use Π=22\7)

Posted by Prince Jadon 6 years ago

CBSE > Class 09 > Mathematics

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How to solve the cyclic quadrilateral is rectangle

Posted by Aryan Kumar 6 years ago

CBSE > Class 09 > Mathematics

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Please teach the construction chapter

Posted by Anjum Fathima 6 years ago

CBSE > Class 09 > Mathematics

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Factorise x^3 - 3x^2 - 9x - 5

Posted by Rshi . 6 years ago

CBSE > Class 09 > Mathematics

1 answers

Ujjawal Verma 6 years ago

F(x)=x^3 - 3x^2 - 9x - 5 F(-1)=(-1)^3 - 3(-1)^2 - 9(-1) -5 = -1-3+9-5 = -4+4 =0 So one factor is (x+1) Now, x^3 -3x^2 - 9x-5 ÷ x+1 Again, after dividing X^2 + 4x + 5 X^2 - x +5x + 5 X(X-1) - 5(X-1) (X - 5) ( X-1) ans...............

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What is adcequent

Posted by Ishank Kr 6 years ago

CBSE > Class 09 > Mathematics

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ABCD is rectangle.On AB and BC two equilateral triangle APB and BQC are described outside the rectangle.prove that AQ=PC

Posted by Monika Mittal559 6 years ago

CBSE > Class 09 > Mathematics

1 answers

Ishank Kr 6 years ago

Proved

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Two opposite angles of a parellelogram are (3x_2)degree and (63 _2x). Rine allthe angles of the quadrilateral

Posted by Krishan Yadav 6 years ago

CBSE > Class 09 > Mathematics

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To verify that angle in a semicircle are right angle,angle is measure segment acute,angle us measure segment obtuse

Posted by Sejal Sejal 6 years ago

CBSE > Class 09 > Mathematics

1 answers

Ishank Kr 6 years ago

Verified

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2+58%688-25

Posted by Nishu Kumat 6 years ago

CBSE > Class 09 > Mathematics

2 answers

Kartik @ 6 years ago

376.04 is answer

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Santa Rogy 6 years ago

Which chapter is this??

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Stop is barricaded from the remaining part of the road by using 50 hollow bones made by recycle cardboard each cone has a base diameter of 40 cm and height 1 metre if the outer side of each of the cones is to be painted and the cost of painting is rupees 12 per metre square what will be the cost of painting all these can use π 3.14 and take root 1.0 4 is equals to 1.02

Posted by E Verma 6 years ago

CBSE > Class 09 > Mathematics

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Csa of conne

Posted by Shreeyansh God 6 years ago

CBSE > Class 09 > Mathematics

1 answers

E Verma 6 years ago

πrl

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In Fig.10.36 A,B and C are three points on a circle with centre O such that angle BOC =30 degree and angle AOB =60 degree. If D is a point on the circle other that the arc ABC, find angle ADC.

Posted by Pawan Hang 6 years ago

CBSE > Class 09 > Mathematics

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Collect the data regarding the total working hours spent in watching T.V. and mobile by 50 students of your class and Represent there with the help of histogram and frequency polygon separately

Posted by Diya Chakraborty 6 years ago

CBSE > Class 09 > Mathematics

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Q.1. Find the area of a triangle two sides of which are 18cm and 10cm and the perimeter is 42cm.

Posted by Nuved Mustafa 6 years ago

CBSE > Class 09 > Mathematics

1 answers

E Verma 6 years ago

21√11

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Find the angle which is 4 times its supplematery

Posted by Simran Simran 6 years ago

CBSE > Class 09 > Mathematics

3 answers

Priyanka Kumari 6 years ago

Let the measure of given angle be x Therefore measure of its supplement=(180-x) It is given that: Angle=4×its supplement X=4(180-x) X=720-4x X+4x=720 5x=720 X=720/5=144

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Simran Simran 6 years ago

Sir how

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Ajay Gupta 6 years ago

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The length of a cinema hall is 20m and breadth is 16m. The sum of the areas of floor and flat roof is equal to the area of 4 walls. Find the height and volume of the hall

Posted by Bhumi Sharma 6 years ago

CBSE > Class 09 > Mathematics