Question

Perimeter of the following rectangle
is 800 cm, then the value of x is-​

Answer 1

Answer:

20 cm

Step-by-step explanation:

let , breadth= x

length = 2x

perimeter= length× breadth

800 cm = 2x × x

800cm = 2x × x

x × x = 800 ÷ 2

x× x = 400 cm

x. = √400 cm

x. = 20 cm