Question

Area of a square garden is 1600 m². Five rounds of wire fence have to be put around it. How much wire is needed ? (1) 800 m (2) 200 m (3) 8000 m (4) 2000 m​

Answer 1

Answer:

Area of square = 1600 m²

side of square =

$\sqrt{1600}$

= 80 m

so, Perimeter = side × 4 = 80 × 4 = 320

320 × 5 =

1600 / 2 = 800 m

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