# Grade 7, Maths Olympiad (CBSE) - Area of Rectangle and Square

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Grade 7 | Maths | Area of Rectangle and Square, Perimeter and Area, Olympiad, CBSE, ICSE, SOF, ITO

**Perimeter and Area of Rectangle:**

*Area of rectangle = length X breadth*

*Perimeter of rectangle = 2(length+breadth)*

*Length of diagonal=(root l*^{2}+b^{2})

**Area of four walls:**

*Area of four walls = 2(length+breadth) X height*

*Length of diagonal = (root *l^{2}+b^{2}+h^{2})

**Area and Perimeter of a Square:**

*Area of square = side X side*

*Diagonal of the Square = (root 2) X side*

*Area of Square = (diagonal)*^{2}/2

Perimeter of Square = 4Xside

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