The value of semiperimeter 's' for a triangle having sides as 4cm, 6cm and 8cm is

18 cm

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9 cm

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15 cm

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21 cm

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Solution

The correct option is B 9 cm
Semiperimeter of a triangle is given by

s = $\frac{a + b + c}{2}$
s = $\frac{4 + 6 + 8}{2}$
s = $\frac{18}{2}$
s = 9 cm

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