Question

the perimeter of a rectanglar field is 54 m if the breath is 12 m then the length is

Answer 1

P=54m

B=12m

P=2(l+b)

54=2(l+12)

54/2=l+12

27-12=l

l=15m

Answer 2

$\textsf{\large{Answer :}}$

The length of the Rectangle is 15m

$\textsf{\large{Explaination}}$

$\textsf{\large{Given}}$

Perimeter of the Rectangle = 54m

Breadth of the Rectangle = 12 m

$\textsf{\large{To find : }}$

Length of the Rectangle

$\textsf{\large{Solution :}}$

Consider length as L

Perimeter of Rectangle =

$\tt{\large{\rightarrow2(L + B) }}$

$\tt{\large{\rightarrow54 = 2(L + 12) }}$

$\tt{\large{\rightarrow 54 = 2L + 24}}$

$\tt{\large{\rightarrow 2L = \: 54 - 24}}$

$\tt{\large{\rightarrow 2L = 30}}$

$\tt{\large{\rightarrow L = \dfrac{30}{2} }}$


$\tt{\large{\rightarrow length \: = 15m}}$

$\textsf{\large{Verification :}}$

$\tt{\large{\rightarrow2(l + b)}}$

$\tt{\large{\rightarrow 54 = 30+ 24}}$

$\tt{\large{\rightarrow \: 54 = 54}}$

$\therefore$The Length of the Rectangle is 15 m