If the circumference of a circle measures 8π cm, what is the area of the circle in terms of π?
1 answer:
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Answer:
19.2cm²
Step-by-step explanation:
Given parameters:
Radius of the circle = 7cm
Angle subtended by the arc = 45°
Unknown:
Area of the sector = ?
Solution:
To find the area of the sector, use the expression below;
Area of sector =
where r is the radius ;
Insert the parameters and solve;
Area of sector = x
x 7²
Area of sector = 19.2cm²