What is the perimeter (in cm, rounded off to one decimal place) of the sector of a circle with a radius of 10 cm and of angle 30°? (Use π = 3.14)
Question:
What is the perimeter (in cm, rounded off to one decimal place) of the sector of a circle with a radius of 10 cm and of angle 30°? (Use π = 3.14)
What is the perimeter (in cm, rounded off to one decimal place) of the sector of a circle with a radius of 10 cm and of angle 30°? (Use π = 3.14)
Options
Answer: (4) 25.2
Explanation:
Perimeter = 2r + (θ/360)×2πr = 20 + (30/360)×2×3.14×10 = 20 + 5.23 = 25.23 ≈ 25.2 cm.
Explanation:
Perimeter = 2r + (θ/360)×2πr = 20 + (30/360)×2×3.14×10 = 20 + 5.23 = 25.23 ≈ 25.2 cm.
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