Question

if an =3n -1 then the value of S2 is ​

Answer 1

If the three sides are 2n, 3n+16, 5n-2, then...

---- s1 + s2 + s3 = Perimeter

---- (2n) + (3n+16) + (5n-2) = 178

---- 2n + 3n+16 + 5n-2 = 178

---- 10n+14 = 178

---- 10n = 178-14

---- 10n = 164

---- n = 164/10

---- n = 16.4

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