The area of circle is 616 cm2. Find the length of the arc of the circle, which subtends an angle of 60° at the centre. ABCD is square field of grass of side 20 cm. At corner A, a donkey is tied with a rope 5 m long and at corner B, a horse is tied with a rope 10 m long. Find, how much more area can the horse graze than the donkey ?
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Answer:
88 cm
Step-by-step explanation:
Given,
πr2=616
r2=22616×7
r2=28×7
r=14
Therefore, Circumference = 2πr=2×722×14=88 cm
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