Question

Q 16. A rectangle piece of land measures 7 km by 5 km. Each side is to be fenced
with 4 rows of wires What is the length of the wire needed?

the correct answer will marked as brainlist
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Answer 1

The perimeter of a rectangular piece of land = 2(Length + Breadth)

= 2(0.7+0.5)

= 2(1.2)

= 2.4 km

∵
1
k
m

=

1000
m
∵1km = 1000m

∴
0.24

=

1000
×
0.24
=
2400
∴0.24 = 1000×0.24=2400 m.

Since 4 rows of wire is required.

∴
2400
×
4
=
9600
∴2400×4=9600 m.

∴
9600

m

=

9.6

k
m
∴9600 m = 9.6 km

Therefore, length of wire required is 9.6 km or 9600 m.

Answer 2

Answer:

each side should be fenced with four round of wire.

length of wire required = 4 ×perimeter of land

perimeter if kand =2(1+b) =2(0.7+0.5)

=2.4km

length of wire required=4×2.4 =9.6km

9.6 km length of wire is required to lay 4 round of fence

Step-by-step explanation:

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