Ask a Doubt
Request a call back

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

ICSE Class 8 Answered

in the fig. given below a square oabc is inscribed in a quadrant opbq of a circle.if oa =20cm,find the area of the shaded region(use pie = 3.14)
Asked by naganshul520 | 23 Jun, 2017, 06:47: PM
answered-by-expert Expert Answer
begin mathsize 16px style On space joining space ob comma space you space will space see space that space the space diagonal space of space the space square space is space equal space to space the space radius space of space the space given space circle. Side space of space the space square equals 20 space cm So comma space the space diagonal space of space the space square equals square root of 2 left parenthesis side right parenthesis equals square root of 2 left parenthesis 20 right parenthesis equals 20 square root of 2 space cm So comma space radius space of space the space part space of space the space circle space is space 20 square root of 2 space cm. Area space of space the space shaded space part equals area space of space the space quadrant space minus space area space of space the space square equals πr squared over 4 minus left parenthesis side right parenthesis squared equals 1 fourth cross times 3.14 cross times open parentheses 20 square root of 2 close parentheses squared minus left parenthesis 20 right parenthesis squared equals 628 minus 400 equals 228 space cm squared end style
Answered by Rebecca | 23 Jun, 2017, 08:13: PM
Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
ICSE 8 - Maths
Find the radius of a semicircle if it's area is 1232cm
Asked by Harshitchoudhary00967 | 03 Jan, 2019, 10:29: 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
×