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ICSE Class 9 Answered

the shape of the top of a table in a restaurant is that of a segment of a circle with the centre O and angle BOD = 90 , BO = OD = 60cm
find: i perimeter of the table
Asked by pereiracalida | 21 Nov, 2017, 11:24: PM
answered-by-expert Expert Answer
 
begin mathsize 16px style Perimeter space of space the space table equals 3 over 4 cross times 2 πr plus 2 straight r equals 3 over 4 cross times 2 cross times 22 over 7 cross times 60 plus 2 cross times 60 equals 282.85 plus 120 equals 402.85 space cm OR Perimeter space of space the space table equals Length space of space major space arc plus 2 straight r equals fraction numerator 2 πr over denominator 360 degree end fraction cross times straight theta plus 2 straight r equals fraction numerator 2 cross times 22 cross times 60 over denominator 360 cross times 7 end fraction cross times 270 plus 120 equals 402.85 space cm end style
Answered by Rashmi Khot | 29 Nov, 2017, 11:34: AM
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