Question

Find the perimeter of the
rectangle whose length is
40 cm
and
diagonal as
ulcm​

Answer 1

LENGTH=40CM

BREADTH= I HAVE TAKED 20CM

SO,BY FORMULA

2(L+B)= 2×(40+20)=60=2×(60)= 120cm

Answer 2

Answer:

Given that length of the side of the rectangle is l=40cm and

the length of the diagonal is d=41cm

let breadth be bcm

Therefore, l

${l}^{2} + {b}^{2} = {d}^{2}$

$⟹ {40}^{2} + {b}^{2} = {41}^{2}$

$⟹ {b}^{2} =81$

$⟹b=9cm$

we know that the perimeter of the rectangle is 2(l+b)=2(40+9)=98cm