Alessandra11nicoleidn
Answered

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7. A garden measures 25 m by 10 m. A fence is to be built around the garden. How many meters of fencing will
be needed?
A. 50 m
B. 60 m
C. 70 m
D. 80 m
​

Sagot :

Subcribe198idn

METER

[tex]\huge\rm{✒Solution:}[/tex]

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Based on the given condition:

We know that:

[tex]\begin{gathered}\begin{cases}l = \text25 \\ w = \text10 \end{cases} \quad\begin{aligned}\end{aligned}\end{gathered}[/tex]

Formulate and subtitute:

[tex] \sf{Subtitute}\begin{gathered}\begin{cases}l = \text25 \\ w = \text10 \end{cases} \quad\begin{aligned}\end{aligned}\end{gathered} \sf{into\:formula}[/tex]

[tex] \sf{P} \rm{ = 21 + 2 \sf{w}}[/tex]

[tex] \sf{P} \rm{ = 2 \times 25 + 2 \times 10}[/tex]

Calculate:

[tex]2 \times (10 + 25)[/tex]

[tex] = 2 \times 35[/tex]

[tex] = \boxed{70}[/tex]

[tex]•••••••••••••••••••••••••••••••••••••••••••••••••••[/tex]

[tex]\huge\rm{✒Answer:}[/tex]

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Therefore the answer is option C. 70 m

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(/^_^)/

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