A gardener wants to fence a circular garden of diameter 21m. Find the length of the
rope
he needs to purchase, if he makes 2 rounds of fence. Also find the cost of the rope at 34
per metre.
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Step-by-step explanation:
Length of rope required = circumference of the garden
Radius = diameter / 2 = 21/2
=> length of the rope = 2πr = 2x22x21/14 = 65.97m
Since he makes 2 rounds of fence, length of rope required = 65.97 x 2 = 131.94
--------------------------------------------------------------------------------------------------------------------------
Price of 1m rope = 34units
Price of 131.94m rope = Xunits
Cross multiply!
=> Xunits = 131.94 x 34 = 4485.96units
I hope you got it!
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