Perimeter formulas - Mathematics knowledge point

= (

+

)\times2,\qquad

=

\times4

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Substitute numbers

a

=8 $\text{cm}$

b

=5 $\text{cm}$

\begin{aligned}(8+5) \times 2 &= 26\ \text{cm}\end{aligned}

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Worked examples

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Quantities in the formula

=

(a

+

b)

\times

2

Solution steps

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Worked examplesVariant 2

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