Question

if diagonal of a rectangle is 10cm and length is 8cm ,then its perimeter is?​

Answer 1

Perimeter= 2×(Length+Breadth)

Length = 8cm

Breadth = 10cm

Perimeter= 2× (10+8)

= 2×18cm

= 36cm.

Hope it will helpful to you.....

Answer 2

Answer:

28 cm

Step-by-step explanation:

if the diagonal is 10 cm and length is 8 cm, then to find the breadth,

we need to use Pythagoras theorem

In the figure below,

BD²=BC²+DC²

10²=BC²+8²

100-64=BC²

BC²=36

BC=√36

=6 cm

so now,

l=8 cm and b=6 cm

perimeter=2(l+b)

=2(8+6)

2 x 14

=28 cm