English

The length of the diagonal of a square is 10sqrt(2) cm. Its area is ______.

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Question

The length of the diagonal of a square is `10sqrt(2)` cm. Its area is ______.

Options

  • 200 cm2

  • 100 cm2

  • 150 cm2

  • `100sqrt(2)` cm2

MCQ
Fill in the Blanks
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Solution

The length of the diagonal of a square is `10sqrt(2)` cm. Its area is 100 cm2.

Explanation:

Area = `1/2 xx ("diagonal")^2 `

= `1/2 xx (10sqrt(2))^2 cm^2`

= 100 cm2

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Chapter 15: Perimeter And Area of Plane Figures - MULTIPLE-CHOICE QUESTIONS (MCQ) [Page 697]

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R.S. Aggarwal Mathematics [English] Class 10
Chapter 15 Perimeter And Area of Plane Figures
MULTIPLE-CHOICE QUESTIONS (MCQ) | Q 8. | Page 697
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