Question

a farmer wants to fence his rectangular field of length 220 m and breadth 180m, with barbed wire 4 times all along its four sides how long barbed wire does he need
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Answer 1

$\bigstar\mid$ Given :

• Length and breadth of the rectangular field is 220m and 180m respectively.

$\bigstar\mid$ To find :

The required wire to be fenced 4 times around the rectangular field.

$\bigstar\mid$ Solution :

• We need to find the 4 times perimeter which will be equal to the required wire to be bared.

We know that,

${ \underline{ \boxed{ \bf \: 4(Perimeter \: of \: the \: rectangle) =Required \: wire \: to \: be \: fenced }}}$

$\sf \dashrightarrow \: Required \: wire \: to \: be \: fenced = 4 \{2(l + b) \}$

$\sf \dashrightarrow \: Required \: wire \: to \: be \: fenced =4 \{2(220 + 180) \}$

$\sf \dashrightarrow \: Required \: wire \: to \: be \: fenced =4 \{2(400) \}$

$\sf \dashrightarrow \: Required \: wire \: to \: be \: fenced =4 \times 400$

$\sf \therefore \: Required \: wire \: to \: be \: fenced =1600m \: ans.$