PLEASE HELP!! Find the circumference of circle K. Round your answer to the nearest hundredth. Circumference = ft
1 answer:
Answer:
12.57 ft
Step-by-step explanation:
Since triangle ∆EFH is a right angled triangle,side |EF| can be determined by
- Sin© = Opposite side ÷ hypothenus side
- where © is the given angle in the triangle
- Sin 60 = 2✓3 ÷ |EF|
- |EF| = 2√3 ÷ sin 60
- |EF| = 2√3 ÷ 0.8660
- |EF| = 4ft
Since Line |EF| is a straight line that passes through the centre of the circle and touch two sides of the circumference,
line |EF| is the diameter of the circle
- Circumference = 2πr
- where r = radius
- radius = diameter ÷ 2
- radius = 4 ÷ 2
- radius = 2 ft
- Circumference = 2πr
- Circumference = 2 × 22/7 × 2
- Circumference = 12.57 ft
- Circumference = 12.57 ft
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Answer:
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Step-by-step explanation: