15.There are Two circles of radii 5d cm and 3 cm touch each other at A and also touch a line at B and C.
The distance BC in cms is?
a. 60
b. 62
c. 68
d. 64

• sqrt((distance between centers)^2 - ( r1^2-R^2)^2)
  sqrt( 8^2 -(5-3)^2)
  sqrt(64- 4)
  sqrt(60) answer .
• 9 years agoHelpfull: Yes(36) No(6)
• plz provide me the solution of this question
  
• 10 years agoHelpfull: Yes(29) No(13)
• DRAW A CIRCLE OF REDIUS 5 CM.AND SMALL OF 3 CM.AFTER DRAWING THE PIC AS PER SPECIFICATION.U WILLO FIND THAT A RIGHT ANGLE TRAINGLE AT THE OUT SIDE OF PIC.WHOSE ONE SIDE IS LENGHTH OF (5+3) =8 CM.AND ANOTHER IS(5-3)=2 CM.SO THE LARGEST SIDE OF TRAINGLE WILL BE (SQUART ROOT OF(8^2+2^2)=squart root of 68.
• 10 years agoHelpfull: Yes(28) No(39)
• it will be sqrt(64)
  circle 1 radius: 5
  circle 2 radius: 3
  
  when a line pass touching the both the circles, it can be assumed as
  radius of 1st circle + radius of 2nd= 8 so sqrt(64)
• 10 years agoHelpfull: Yes(16) No(46)
• ans is sq rt of 60
  
  8^2 - 2^2 = sqrt(60) coz hypotenuse is 8cm
• 9 years agoHelpfull: Yes(13) No(2)
• ans is sqrt(68).
  to understand you have to draw the circles
  
• 10 years agoHelpfull: Yes(11) No(31)
• Sol: Option A
  √(d^2−(r1−r2)^2)
  d = distance between centers
  √((5+3)^2 – (5-3)^2)= √60
• 9 years agoHelpfull: Yes(8) No(1)
• a
  soln: using sq root[d^2- (r1-r2)^2]
• 9 years agoHelpfull: Yes(7) No(0)
• admin pleaseremove unnecessary solutions they are deviating
  
• 8 years agoHelpfull: Yes(7) No(0)
• BC^2 = (5+3)^2 - (5-3)^2
  so, BC = sqrt(60)
• 8 years agoHelpfull: Yes(2) No(0)
• a
  5-3=2
  8*8-2*2=60
  60^(1/2)=a
• 9 years agoHelpfull: Yes(1) No(1)
• draw diagram such that two circle touches each other at point A and also two circle touches each other through tangents at B and C.Now apply pythagorus theorem.
  
  sqrt(64-4)= sqrt 60.................100% correct
• 9 years agoHelpfull: Yes(1) No(2)
• answer is sqroot 68 sq(8^2+2^2)
• 8 years agoHelpfull: Yes(1) No(1)
• Let x be amount ,
  then, (5*4*x)/100 +x= 1020, hence x=850
• 9 years agoHelpfull: Yes(0) No(0)
• ans is sqrt(60)
  
• 9 years agoHelpfull: Yes(0) No(0)
• https://www.quora.com/What-is-the-distance-of-BC-in-cms-if-two-circles-of-radii-5-cm-and-3-cm-touch-each-other-at-A-and-also-touch-a-line-at-B-and-C
• 7 years agoHelpfull: Yes(0) No(0)