Question

Answer plz plx plz .....................

Answer 1

$\mathfrak{\huge{\green{\underline{\underline{Answer }}}}}$

$perimeter \: of \: rectangle = 2(l + b)$

$2(l + b) = 140$

$2(l + 20) = 140$

$l + 20 = 140 \div 2$

$l + 20 = 70$

$l = 70 - 20$

$l = 40cm$

Now Area ,

length = 40 cm & breadth = 20 cm

$area \: of \: rectangle = l \times b$

= 40 × 20

$= 400 {cm}^{2}$

Hope it will help you ❤️

Answer 2

Answer:b=20

Perimeter of rectangule =2(l+b)

2(l+20)=140

l+20=140/2

l+20=70

l=70-20

l=40

Hope its helpfull for you

Step-by-step explanation: