Question

if the length and diagnol of a rectangle are 143 m and 145 m , rcpectively, find the area and perimeter. give it fast pls ​

Answer 1

Answer:

The answer is

Step-by-step explanation:

l = 143 m

d = 145 m

by using heron's formula

 diagonal =$\sqrt{length^{2} } + \sqrt{breadth^{2}$

                =  $\sqrt{143^{2} } +\sqrt{x^{2} }$

         145 = 143 + x

  145 - 143 = x

             2 = x

          ∴ breadth of the rectangle is 2m.

To find the perimeter,

perimeter = 2( l + b)

                  =2( 143 + 2)

                  =2( 145)

 perimeter = 290 m

To find the area,

    area = l × b

             =143 × 2

    area = 286 $m^{2}$