Question

The radius of a circular grass land is 35 meter.there is a foot path of width 7 meter around in it find the area of the foot path

Answer 1

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radius of circular grass land = 35 metre

area = πr² = π (35)²

radius of grass land = 35 + 7 = 42metre

area = πr²

= π (42)²

= π (42² - 35²)

= π (42 + 35) (42 - 35)

= π × 77 × 7

$= \frac{22}{7} \times 77 \times 7$

= 1694m²

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