Request a call back

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

CBSE Class 9 Answered

Q. Out of two concentric circles,the radius of the outer circle is 5 cm and the chord AC of length 8 cm is tangent to the inner circle.Find the radius of the inner circle.

Asked by sambitgenius2005 | 24 Apr, 2019, 08:03: PM
Expert Answer
 
 
 
 
 
 
 
From the figure,
 
Chord AB = 8 cm
OC is perpendicular to the chord AB
AC = CB = 4 cm
In right triangle OCA
OC2 + CA2 = OA2
OC2 = 52 - 42 = 25 - 16 = 9 
OC = 3 cm
 
Answered by Sneha shidid | 25 Apr, 2019, 09:47: AM
CBSE 9 - Maths
Asked by arvindhsb2005 | 14 Jan, 2020, 09:14: PM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by Topperlearning User | 18 Aug, 2017, 09:07: AM
ANSWERED BY EXPERT
CBSE 9 - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
CBSE 9 - Maths
begin mathsize 12px style Two space chords space AB space and space AC space of space straight a space circle space are space equal. space Prove space that space the space centre space of space the space circle space lies space on space the space angl e space bisector space of space angle BAC. end style
Asked by Topperlearning User | 29 Apr, 2016, 02:46: PM
ANSWERED BY EXPERT

Start your hassle free Education Franchisee and grow your business!

Know more
×