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If the area of a square field is x^2 + y^2 + z^2 + 2xy – 2yz – 2zx sq. units, then its perimeter is

Correct option is (C) 4 (x + y – z) Let side length of the square be a unit. \(\therefore a^2=x^2+y^2+z^2+2xy-2yz-2zx\) \(=x^2+y^2+(-z)^2+2\times x\times y\) \(+2\times y\times -z+2\times -z\times x\) \(=(x+y-z)^2\) sq. units \(\Rightarrow\) \(a=(x+y-z)\) unit \(\therefore\) Perimeter of the square =...

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If the area of a square field is x^2 + y^2 + z^2 + 2xy – 2yz – 2zx sq. units, then its perimeter is 2 Answers 1 views

Base of a coloured flag which is in the shape of triangle is 2 + √2 units and height is 2 – √2 units. Then the area of flag in square units.

Correct option is (C) 1 Area of flag \(=\frac12\times\) Base \(\times\) Height \(=\frac12\times(2+\sqrt2)\times(2-\sqrt2)\) \(=\frac{4-2}2\) = 1 square units

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The side of a square is 19 units then its area is ………………… sq. units.

Correct option is D) 361

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The area of a square is 1024 sq. units, then its side is ……………… units.

Correct option is A) 32

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The area of a square is 1024 sq. units, then its side is ……………… units. 2 Answers 1 views

Side of a square is 7 cm then its area is ………………. cm^2.

Correct option is A) 49

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Area of square is 1225 cm^ then its side is ……………… cm