4. Find the diameter of a circle, whose area is: (i) 50.24 m² (ii) 314 m2
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Answer:
i)diameter of the circle with area 50.24 m²is the 8 m
ii) diameter of the circle with area 314 m²is the 20 m
Step-by-step explanation:
Let the radius of the circle be r and diameter is 2r.
i) area of the circle = πr² = 50.24 m²
r² = 50.24/3.14
r² = 16
r = 4
diameter= 2r = 2(4) = 8m
ii) area of the circle = π r² = 314 m²
r² = 314/π
r² = 314/3.14
r² = 100
r = 10
diameter= 2r = 2(10) = 20 m
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