Question

9. A rectangular piece of plot is 0.4 km long and 0.3 km wide. Each side needs to be fenced by 3 round
wires. What is the length of wire needed?​

Answer 1

Answer:

Since the 4 rows of wires are needed. Therefore the total length of wires is equal to 4 times the perimeter of rectangle. Perimeter of field = 2 x (length + breadth) = 2 x (0.7 + 0.5) = 2 x 1.2 = 2.4 km = 2.4 x 1000 m = 2400 m Thus, the length of wire = 4 x 2400 = 9600 m = 9.6

Answer 2

Step-by-step explanation:

First find the perimeter

2×(.4×.3)= 2×.12=.24Km for each side to fenced

Then 3 =.24×3=.72 Km

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