Question

Find the perimeter of the rectangle whose length is 40cm and diagonal is 41cm

Answer 1

given,
length = 40cm
diagonal = 41cm
then,
breath = √(digonal^2 - length^2)
= √(41^2 -40^2)
=√{(41+40)(41-40)}
=√(81×1)
= √81 = 9 cm
hence,
perimeter = 2(length + breath)
= 2(40+9) = 2×49 =98cm

I hope this will help you....

Answer 2

hey here is ur answer
perimeter of rectangle =l into b
= 40 into 41
= 1640