Question

5. A rectangular piece of land measures 0.7 km by 0.5 km. Each side is to be
fenced with 4 rows of wires. What is the length of the wire needed?
​

Answer 1

Answer:

9.6km

Step-by-step explanation:

perimeter = 2 (0.7 + 0.5)

perimeter = 2.4

we need 4 rows on each side

therefore, length of wire = 2.4 * 4

                                         = 9.6 km

Answer 2

☯ GIVEN :

• Length of rectangular piece :- 0.7 km

• Breadth of rectangular piece :- 0.5 km

• Each side is to be fenced with 4 rows of wire

☯ TO FIND :

• Total length of wire needed.

☯ FORMULA REQUIRED :

$\bigstar{\underline{\boxed{\red{\bf{{Perimeter =2(Length+Breadth) }}}}}}\bigstar$

$\bigstar{\underline{\boxed{\red {\bf{Total \: wire = Perimeter \times No. \:of \:rows}}}}}$

☯ SOLUTION :

$\longmapsto \bigg(2 \: (0.7 + 0.5) \bigg) \times 4$

$\longmapsto (2 \times 1.2) \times 4$

$\longmapsto 2.4 \times 4$

$\longmapsto \huge {\underline{\boxed {\green{\bf 9.6 \: km}}}}$

$\huge{\pink{\therefore}}$ We need 9.6 km of wire to fence the garden with four rows.