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Answer:
a) given
circumference of circle =88m
π=22/7
We know that
circumference of circle=2πr
2×22/7×r=88
r=88×7/2×22
r=14
d=14+14=28
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circumference= 2πr
88= 2×22/7×r
88/44= 7r
2 = 7r
2/7=r
d=2×2/7=4/7
circumference= 2πr
22= 2×22/7×r
22/44 = 7r
1/2=7r
1/14=r. - d=1/14×2=2/14
circumference=2πr
110=2×22/7r
110/44=7r
5/2=7r
5/14=r. d=5/14×2=5/14
circumference=2×22/7×r
23 = 44/7r
161/44=r
d= 161/44×2=161/22
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