Math, asked by Anonymous, 1 year ago

Two circles of radii 5 cm and 3 cm intersect at two points and the distance between their centres is 4 cm. Find the length of the common chord.I want the accurate ans with step by step solution.plsss.....

dewanaaryan1: i think the distance bw their centres must be greater tun 5 cm ! otherwise the question is wrong!!

Anonymous: never the question is wrong,the center of the smaller circle may be inside the larger circle

dewanaaryan1: Hey then those are concentric circles... you must mention that thing!

Anonymous: it is not concentric,it meets at 2 points

dewanaaryan1: i a m sorry let me give u the ans

Anonymous: i think,its in 10.4 (ncert),if no,i don't know

Anonymous: yep,but make it fast,plss

Answers

Answered by dewanaaryan1

i am sorry for the wrong and i gave.... this is a simple question with a trick!

we can find the area of triangle abe by herons formula. We know that $\angle ACB$ = 90 degree. so in triangle abc area can be found by 1/2 bh. we know the base and the area so we can get the height! so we will obtain AC similarly we will get CD and then add them!

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Anonymous: what is the base?

Anonymous: ok,leave it..let me do.

dewanaaryan1: u said the distance between their centres is 4 cm ..that is the base yr... se the figure properly!

Anonymous: 4,3 and 5 are the sides,so we can do it by heron'sformula;right?

Anonymous: w i got it.i suddenly mistook the formula to another

Anonymous: thanks again

dewanaaryan1: no problem!

Anonymous: :)

Anonymous: This is called a genius answer!!!
Nice one dude!!

Anonymous: hum,i found it in my book too,now ;)any way,cool

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