Question

how to solve length 20 cm and breath 48 cm it's perimeter and area both

Answer 1

perimeter=
$= 2(l + b) \\ 2 \times 20 + 48 \\ 2 \times 68 \\ 13$
area,=

$l \times b \\ \: 20 \times 48 \\ 960$

Answer 2

to solve perimeter we have to
2(length+breath)= 2(20+48)
so answer is 34

to solve area we have to
length×breath
so answer is 960