Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

Asked by Topperlearning User | 31 Aug, 2017, 01:47: PM
answered-by-expert Expert Answer
 
begin mathsize 12px style The space circles space touch space internally comma difference space of space their space radii equals distance space between space their space centres space equals space 6 space cm Let space the space radii space of space the space given space circles space be space straight r space cm space and space straight r plus 6 space cm Sum space of space their space areas equals πr squared plus straight pi open parentheses straight r plus 6 close parentheses squared equals straight pi open square brackets straight r squared plus open parentheses straight r plus 6 close parentheses squared close square brackets straight pi open square brackets straight r squared plus open parentheses straight r plus 6 close parentheses squared close square brackets equals 116 straight pi straight r squared plus open parentheses straight r plus 6 close parentheses squared equals 116 2 straight r squared plus 12 straight r minus 80 equals 0 open parentheses straight r plus 10 close parentheses open parentheses straight r minus 4 right parenthesis close parentheses equals 0 straight r equals 4 space neglecting space the space negative space value space as space radius space cannot space be space negative. The space radii space of space the space two space circles space are space 4 space cm space and space 10 space cm. end style
Answered by | 31 Aug, 2017, 03:47: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 10 - Maths
A blacksmith has a rectangular sheet of iron. He has to make a cylindrical vessel both circular ends are closed. When he minimizes the wastage of the sheet of iron, then what is the ratio of the wastage to the utilised area of sheet?
question image
Asked by jagdishdabang79 | 18 Mar, 2024, 08:40: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
A square with perimeter p cm has more area than a circle with circumference p cm. State true or false with explanation
Asked by Trisha Gupta | 07 Oct, 2021, 03:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
if area of circle numricle double its perimeter find the radius of circle 4units
Asked by sohamsuryawanshi7824 | 22 Sep, 2020, 06:29: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
If a truck covers 2.2 km and each wheel makes 350 complete revolution.Find the radius of the wheel  
Asked by kibaisato00 | 04 Jul, 2020, 11:39: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
the forewheel of tractor makes 120 revolution more than the rear wheel in going 720m. if the diameter of the forewheel is doubled and the diameter of the rear wheel in increased by half times the present diameter then the forewheel makes 20 revolution more than the rear wheel in going the same distance find the circumference of each wheel
Asked by patil.gopi400 | 01 Jun, 2020, 10:18: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Hello Sir, Please clarify my doubt 1) A wire is in the form of a square of side121cm.It is cut and made into the shape of a circle.Find the diameter of the circle. 2) a wire is in the form of a triangle of sides 28cm,26cm and 30cm.The wire is cut and made into a circle.Will the area of the circle be the same as that of the triangle? Thank You.
Asked by seeni2005 | 24 Nov, 2019, 03:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Hello sir, please explain the questions that follow: 1) Find the width of the race track which is of a ring shape if the inner circumference is 528m and the outer circumference is 616m. 2) A wire is in the form of a square of side121cm.It is cut and made into the shape of a circle.Find the diameter of the circle. 3) a wire is in the form of a triangle of sides 28cm,26cm and 30cm.The wire is cut and made into a circle.Will the area of the circle be the same as that of the triangle? Thank You.  
Asked by seeni2005 | 20 Nov, 2019, 10:10: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
A bicycle wheel makes 5000 revolutions in moving 11km. Find diameter of wheel?
Asked by vedantsagrawal23 | 01 Aug, 2019, 06:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
A triangle has side lengts 2,3,4. a tangent is drawn to the incircle parallel to side 2cm cutting the other two sides at M and N .Find the lenght MN.  
Asked by sandy72434 | 07 Jul, 2019, 01:52: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Four identical coins are placed in a square. For each coin, the ratio of area to circumference is same as the ratio of circumference to area. Then, find the area of the square that is not covered by the coins. CAT Mensuration Test
Asked by rushabhjain.av | 07 Feb, 2019, 03:46: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×