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The area of a square plot is 484 m2. Find the length of its one side and the length of its one diagonal.

Mensuration

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Answer

Let ABCD be the square plot having area 484 m2.

The area of a square plot is 484 m^2. Find the length of its one side and the length of its one diagonal. Mensuration, ML Aggarwal Understanding Mathematics Solutions ICSE Class 9.

Let length of each side of the plot be x meters.

We know that,

Area of square = side × side

Substituting the values we get,

⇒ 484 = (x)2

⇒ x = 484\sqrt{484} = 22 m.

Since, each angle = 90° in a square.

In right angle triangle ABC,

Using Pythagoras Theorem,

⇒ AC2 = AB2 + BC2

⇒ AC2 = 222 + 222

⇒ AC2 = 484 + 484 = 968

⇒ AC = 968=222\sqrt{968} = 22\sqrt{2}

⇒ AC = 22 × 1.414 = 31.11 m.

Hence, length of side = 22 m and length of diagonal = 31.11 m.

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