Question

ii) Jay wants to fence a rectangular park of 50m long 30 m broad and a
square park of 75m, using a steel wire. What is the length of steel wire
required to fence each of the parks?
​

Answer 1

Answer:

Step-by-step explanation:

Cost of fencing the field at  Rs15 per meter = Rs1500.

✳SOLUTION✳

Length (l) of the rectangular park = 30 m.

Breadth (b) of the rectangular park = 20 m.

Fencing is done along the perimeter .

Perimeter of the rectangle = 2(length + breadth) = 2(l+b)

Perimeter of the rectangle = 2(30+20)

Perimeter of the rectangle = 2 × 50 = 100m.

Rate of fencing per meter = ₹15 per meter.​

∴ Cost of fencing the field at  ₹15 per meter = 15 × 100

✩ Cost of fencing the field at  ₹15 per meter = ₹1500

Answer 2

Answer:

$fencing = perimeter$

$perimeter \: of \: rectangle \: = 2(l + b)$

$2(50 + 30) = 2 \times 80 = 160 \: m$

$perimeter \: of \: square \: = 4 \times s$

$4 \times 75 = 300 \: m$

$160m \: length \: of \: steel \: wire \: is \: required \:to \: fence$

$the \: rectangle \: park$

$300m \:length \: of \: steel \: wire \:is \: required \: to \: fence$

$the \: square \: park$