CBSE Class 9 Answered
Two circles of radii 10 cm and 17 cm intersect at two points and the distance between their centres is 21 cm. Find the length of the common chord.
Asked by | 30 Jan, 2012, 20:54: PM
Let the radius of the circle centred at O and O' be 17 cm and 10 cm respectively.
OA = OB = 17 cm
O'A = O'B = 10 cm
OO' will be the perpendicular bisector of chord AB.
? AC = CB
It is given that, OO' = 21 cm
Let OC be x. Therefore, O'C will be 21 ? x.
In ?OAC,
OA2 = AC2 + OC2
? 172 = AC2 + x2
? 289
Answered by | 31 Jan, 2012, 09:55: AM
Application Videos
Concept Videos
CBSE 9 - Maths
Asked by indu.suresh1220 | 27 Dec, 2023, 23:12: PM
CBSE 9 - Maths
Asked by subbusuchi1978 | 05 Nov, 2023, 10:24: AM
CBSE 9 - Maths
Asked by rameshsonkar1234ramesh | 21 Dec, 2022, 23:03: PM
CBSE 9 - Maths
Asked by sdmbotch1123 | 17 Dec, 2022, 21:39: PM
CBSE 9 - Maths
Asked by geetaradha8835 | 16 Dec, 2022, 19:59: PM
CBSE 9 - Maths
Asked by chalkekalyani80 | 06 Mar, 2022, 11:25: AM
CBSE 9 - Maths
Asked by sangeetabharti123456789 | 22 Feb, 2022, 09:01: AM
CBSE 9 - Maths
Asked by manognareddy.p28 | 25 Jul, 2021, 12:52: PM
CBSE 9 - Maths
Asked by Samidhaindulkar133 | 11 Mar, 2021, 16:03: PM