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दो बहुभुज की भुजाओ की संख्या का अनुपात `5:6` हे तथा उनके आतंरिक कोणों का अनुपात `24:25` हे। तो इन दोनों बहुभुजों की भुजाओ की संख्या ज्ञात करे
A. 10,12
B. 20,24
C. 15,18
D. 35,42

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Correct Answer - B
Let the number of sides of be 5x and 6x
`=((2n-4)xx90^(@))/n`
Given: `n_(1)/n_(2)= (5x)/(6x)`
`("interior angle"_(1))/("Interior angle"_(2)) = 24/25`
`therefore` Using interior angle formula
`((n_(1)-2)xx180^(@))/(n_(1))/((n_(2)-2)xx180^(@))/(n_(2)) = 24/25`
`((5x-2)/(5x))/((6x-2)/(6x)) = 24/25`
Then no of sides
`=5xx2=10`
`6xx2=12`
=10,12

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