Question

Find the perimeter of a rectangle whose area 440cm and length is 22cm

Answer 1

Answer:

84

Step-by-step explanation:

1. divide area by length=440/22=20

2. use the formula'2*(l+b)'

3. use the formula like this:-

(i)2*(l+b)

(ii)=2*(22+20)

(iii)=2*42

(iv)=84

4. Finish!

Answer 2

Given :

• Area of Rectangle = 440cm
• Length of Rectangle = 22cm

To Find :

• Perimeter of Rectangle

Solution :

Firstly we will find the breadth of Rectangle :

$\implies\tt{Area = 440cm}$

$\implies\tt{Length=22cm}$

Using Formula :

$\boxed{Area\:of\:Rectangle=length\times{breadth}}$

Putting Values :

$\implies\tt{440=22\times{b}}$

$\implies\tt{\cancel\dfrac{440}{22}=b}$

$\implies\tt\bold{b=20cm}$

Now :

$\implies\tt{Length=22cm}$

$\implies\tt{Breadth=20cm}$

Using Formula :

$\boxed{Perimeter\:of\:Rectangle=2(l+b)}$

Putting Values :

$\implies\tt{2(22+20)}$

$\implies\tt{2(42)}$

$\implies\tt\bold{84{cm}^{2}}$

So , Perimeter of Rectangle is 84cm²..