Question

The perimeter of an octagon is 280 cm, the sides are in arithmetic progression

the longest side is 4 times the length of the shortest side find the length of the longest side

Answer 1

Answer:

shortest side = 14

longest side = 56

Step-by-step explanation:

because first term + last term = second term + second last term = third term + third last term and so on

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Answer 2

Answer:

Step-by-step explanation:

Perimeter of an octagon(P) =280cm

Longest side(L) = 4 times the length of the shortest side(S)

now,

P = 8 a

280=8*4x

280/32=x

x=8.75