Question

Help plz

Level - Class 6 ​

Answer 1

Step-by-step explanation:

$area \: of \: a \: square = side {}^{2} \\ 25 = side {}^{2} \\ \sqrt{25 } = side \\ 5 = side \\ perimeter \: of \: a \: square = 4 \times side \\ 4 \times 5 = 20 \\ perimeter = 20cm$

Answer 2

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$\:\:\:\:\:\:\:\:\:\:\:\:\:\: \large\mathfrak{\dag \: Concept :- }\:\:\:\:\:\:\:\:\:\:\:\:\:\:$

• We know that the area of the square is 25 cm². And we've to find the it's perimeter. To find the perimeter, the measure of side is required. We can find it by inserting the measure of area in the formula of area of square, and then solve for side. Finally, by substituting the measure of side in the formula of perimeter of square, gives the required answer.
• We need to use formula to solve this question.Where,$\:{\sf{\:a=side}}$ :-

• $\underline\red{{\boxed{\sf{{Area}_{[Square]}={a}^{2}\:sq.units}}}}$

• $\underline\red{{\boxed{\sf{{Perimeter}_{[Square]}=4a\:units}}}}$

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$\:\:\:\:\:\:\:\:\:\:\:\:\:\: \large\mathfrak{\dag \: Solution :- }\:\:\:\:\:\:\:\:\:\:\:\:\:\:$

According to the question, we are given area of a square = 25 cm².

❍Side of the square:-

$\implies{\sf\purple{{{Area}_{[Square]}={a}^{2}\:sq.units}}}$

$\:\:\:\:\:\::\implies{\sf{25={a}^{2}}}$

$\:\:\:\:\:\::\implies{\sf{\sqrt{25}=a}}$

$\:\:\:\:\:\::\implies\underline\red{{{\sf{5\:cm=a}}}}$

❍Perimeter of the square:-

$:\implies {\sf\purple{{4a\:units}}}$

$\:\:\:\:\:\::\implies{\sf{4\times 5}}$

$\:\:\:\:\:\::\implies{\sf{\red{\underline{\underline{20\:cm}}}}}$

$\therefore{\underline{\sf{Hence, \;the\;perimeter\; of \;the\;square \;is\;\bf{ 20\;cm}.}}}$

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