Question

find the area perimeter and diagonal of a square steel plate whose side measure 28.1cm​

Answer 1

Answer:

Side of square (l) = 28.1cm

Now, Area = l×l = 28.1 × 28.1 = 789.61

As all angle of square are 90°,

:. By Pythagoras theorem,

Diagonal = √l^2 + l^2 = √789.61+789.61

=√1579.22 = 39.7cm

Perimeter = 4l = 112.4 cm