Ask a Doubt
Request a call back

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

ICSE Class 9 Answered

The number of sides of two regular polygon are in the ratio 4:5 and their interior angles are in the ratio 15:16.Find the numbers of sides of each of the polygon. .
Asked by Kushal152002 | 26 Feb, 2018, 10:31: PM
answered-by-expert Expert Answer
begin mathsize 16px style if space there space are space straight n space sides space then space interior space angles space equals fraction numerator open parentheses straight n minus 2 close parentheses cross times 180 over denominator straight n end fraction let space straight x space and space straight y space are space number space of space sides straight x over straight y equals 4 over 5 interior space angles space equals fraction numerator open parentheses straight x minus 2 close parentheses cross times 180 over denominator straight x end fraction interior space angles space equals fraction numerator open parentheses straight y minus 2 close parentheses cross times 180 over denominator straight y end fraction fraction numerator fraction numerator open parentheses straight x minus 2 close parentheses cross times 180 over denominator straight x end fraction over denominator fraction numerator open parentheses straight y minus 2 close parentheses cross times 180 over denominator straight y end fraction end fraction equals 15 over 16 fraction numerator open parentheses straight x minus 2 close parentheses cross times 180 over denominator open parentheses straight y minus 2 close parentheses cross times 180 end fraction cross times straight y over straight x equals 15 over 16 fraction numerator open parentheses straight x minus 2 close parentheses cross times 180 over denominator open parentheses straight y minus 2 close parentheses cross times 180 end fraction cross times 5 over 4 equals 15 over 16..... put space straight x equals fraction numerator 4 straight y over denominator 5 end fraction fraction numerator open parentheses fraction numerator 4 straight y over denominator 5 end fraction minus 2 close parentheses over denominator open parentheses straight y minus 2 close parentheses end fraction equals 3 over 4 solve end style
Answered by Arun | 27 Feb, 2018, 10:53: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
ICSE 9 - Maths
(a+b-c)(a-b+c) simplify by using formulas 
Asked by hemalathamamidi6 | 26 Apr, 2024, 03:20: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
in the adjoining figure x and y are midpoints of side ab and ac respectively of triangle ABC if BC is equals to 7 cm ab is equals to 8.4 cm and ac is equals to 7.4 CM then find the perimeter of trapezium xbc y
question image
Asked by jatinderkaur19852008 | 25 Apr, 2024, 06:25: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
(2X+3y+5)(2x+3y-5)
question image
Asked by shantanupandey271208 | 21 Apr, 2024, 03:03: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
Find the time in years in which ₹12500 will produce ₹ 3246.40 as compound interest at 8% per annum, interest compounded annually
Asked by harshansingh92 | 09 Apr, 2024, 06:10: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
3 rational numbers
Asked by gtdgyyydsyj | 09 Apr, 2024, 03:22: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
subtract 5√3+7√5 from 3√5-7√3
Asked by patnamprakash545 | 07 Apr, 2024, 05:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
if X+1÷x =6 find x-1/x ,x²-1/x²
Asked by ysubha24 | 06 Apr, 2024, 06:24: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
The point A(3,2)
question image
Asked by vipin13022011 | 03 Apr, 2024, 08:19: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
solve: 3^x-1x 5^2y-3=225
question image
Asked by jahnvi | 31 Mar, 2024, 01:10: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
ICSE 9 - Maths
a
question image
Asked by ay7599219263 | 28 Mar, 2024, 09:30: AM
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
×