Physics
22.11.2020 10:21
139
171
8
miaa1024
5,0(100 marks)
Area of a circle = πr², where r is radius of circle
when area = 725 cm²,
r² = 725/π
r² = 725 ÷ 3.14 =
r = √230.89
r = 15.2 cm is the radius of the hole
when area = 725 cm²,
r² = 725/π
r² = 725 ÷ 3.14 =
r = √230.89
r = 15.2 cm is the radius of the hole
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