1.

Find the perimeter of rectangle whose breadth is 24cm and a diagonal is 25cm

Answer»

Answer:

breadth \: of \: rectangle = 24cm

We know that, the diagonal of a rectangle divides it into two right ANGLE traingle.

So, we can apply Pythagoras theorem.

let \: us \: take \: base \:  = 24 \: cm

and \: diagonal \:  =  \: hypotenuse \:  = 25 \: cm

Let's apply Pythagoras theorem

{hypotenuse}^{<klux>2</klux>}  =  \: \:  {base}^{2}  +  {<klux>PERPENDICULAR</klux>}^{2}

Now Put The Value

{25}^{2}  =  {24}^{2}  +  {perpendicular}^{2}

625 - 576 =  {perpendicular}^{2}

49 =  {perpendicular}^{2}

\sqrt{49}  = perpendicular

7 = perpendicular

So , Perpendicular = Length = 7

We know that.

PERIMETER of Rectangle = 2(l +b)

= 2(l + b)

= 2 (7 + 24)

= 2(31)

= 62  \: cm \: answer

Hence the Perimeter of Rectangle is 62CM



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