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Perimeter Of Circle

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perimeter of circle perimeter of circle or circumference of the circle is defined as measurement of boundary length of the circle. formula of circumference of the circle for radius R is 2piR,where R is radius of the circle and  value of π is 3.14 or 22/7. The circumference of the circle for diameter D is πD. Question for practice Q1. Find circumference of the circle whose radius is 4cm. solution: Radius R=4cm               circumference =2πR                                     =2*3.14*4 = 25.12cm Q2. Find circumference of circle where diameter is 16cm. solution: Diameter D=16cm               Radius R=16/2=8cm             circumference=2πR                                   =2*3.14*8=50.24 cm Alternate Method : D=...
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Perimeter of square

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 PERIMETER OF SQUARE  The perimeter of square is calculated by adding its four sides. We know that all the sides of a square are equal and hence, its perimeter will be 4 times its side, i.e. 4 × Side. The formula for Perimeter of a Square Perimeter of Square (P) = 4 × Side Where side is length of  the side of square.  Example: 1. Find the perimeter of a square whose side      is 4cm. Sol:  side =4cm        Perimeter of square= 4×4= 16cm 2.Find the perimeter of a square whose side     is 5 cm. Sol:   side= 5cm          Perimeter of square= 4×5 =20cm 3. Calculate the perimeter of a square               having a side of 15 cm. Sol: side =15cm        Perimeter of square= 4×15= 60cm 4.   If the perimeter of a square is 64 cm,             find its side. Sol: perimeter of square=64cm ...
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PERIMETER OF RECTANGLE

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Perimeter of rectangle Rectangle is a four-sided polygon having two dimensions i.e. length and breadth. Formula of Perimeter: Perimeter of a rectangle = sum of four sides = AB + BC + CD + AD = length + breadth + length + breadth = 2 length + 2 breadth Then, we will get: Perimeter of a rectangle = 2 × (length + breadth) Question for practice : 1. Find perimeter of rectangle whose length is 16 m and breadth 12 m .  Length=16 m Breadth=12 m Perimeter of rectangle= 2( l+b)                                           = 2(16+12)                                            = 2(28) =56m 2. Find perimeter of rectangle whose  A rectangular swimming pool is 9 m long and 4 m broad. Find the area of the swimming pool. Length of the rectangular swimming...
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Perimeter of Triangle

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How to find Perimeter of Triangle?  The perimeter of Triangle is sum of all its sides . It means perimeter of Triangle is equal to sum of its sides . let, that a, b and c are sides of Triangle then perimeter of triangle = a+b+c. Let us consider some of the examples on perimeter of a triangle: 1. Find perimeter of triangle having sides of      3cm , 4cm and 5cm.          Perimeter of triangle= 3+4+5=12cm 2. Find perimeter of triangle ABC where              sides are 6cm , 6cm and 5cm.          Perimeter of triangle= AB +BC+CA= 6+6+5                                             = 17cm 3.Find the perimeter of an equilateral triangle whose one side is 6 cm. A triangle in which all the sides are equal is called an equilateral triangle. Perimeter of the equilateral triangle = 3 × si...
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