the circumference of the circle is 132 cm.a quadrant is cut off from the circle.find the area of the quadrant.
Attachments:
Answers
Answered by
11
Circumference = 132 cm
Find the radius:
Circumference = 2πr
2πr = 132
r = 132 ÷ 2π
r = 21 cm
Find the area of the whole circle:
Area = πr²
Area = π(21)² = 1386 cm²
Find the area of a quadrant:
Area of the whole circle = 1386 cm²
Area of the quadrant = 1386 ÷ 4 = 346.5 cm²
Answer: The quadrant is 346.5 cm²
Similar questions