Question

A rectangular field is of length 45 m and
breadth 25 m. It has to be fenced around with
barbed wire. Find the length of barbed wire
required to fence by giving 4 rounds. ​

Answer 1

Answer:

140 m.

Step-by-step explanation: it means we need to find perimeter.

l = 45m,b=25

Perimeter = 2( l + b )

= 2( 45 + 25 )

= 2 (70)

= 140 m.

Answer 2

Answer:

Length of barbed wire required to fence the rectangular field by giving 4 rounds = 560 m

Step-by-step explanation:

Given:

Length of rectangular field = 45 m

Breadth of rectangular field = 25 m

Find:

Length of wire required to fence by 4 rounds = ?

Solution:

A wire is to be fenced around the rectangular field. So, the length of the wire to fence the rectangular field by 1 round is equal to the perimeter of the field.

Perimeter of the rectangular field = 2 (length + breadth)

                                                        = 2 (45 + 25)

                                                        = 2 × 70

                                                        = 140

Length of wire to fence the field by 1 round = 140 m

Length of wire to fence the field by 4 rounds = 140 × 4

                                                                           = 560 m

Hence, 560 m of barbed wire is required to fence the rectangular field by giving 4 rounds.

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