Question

Help me out Length = m

Answer 1

$perimeter = a + b + c$

$perimeter = 4 + 3 + c$

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${a}^{2} + {b}^{2} = {c}^{2}$

${4}^{2} + {3}^{2} = {25}^{2}$

$\sqrt{25} = 5$

$c = 5 \: meters$

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$perimeter = 4 + 3 + 5$

$perimeter = 12 \: meters$

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$the \: length \: of \: the \: fencing \: is\: 12 \: meters$