MCQ
Find perimeter of a square if its diagonal is ${7}\sqrt{2}\text{cm}$
- A${28}\sqrt{2}\text{cm}$
- ✓${28}\text{cm}$
- C${28}\sqrt{8}\text{cm}$
- D${14}\text{cm}$
Diagonal of square $= \sqrt{2}\text{a}$
${7}\sqrt{2} = \sqrt{2}\text{a}$
So a $= 7a$ Perimeter $= 4a$
$= 4 \times 7$
$28\ cm.$
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