A sector of a circle of diameter 8cm contains an angle of 135° . The area of sector is?
1. 6π cm²
2. 6 cm²
3. 12π cm²
4. 20 cm²
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1. 6π cm²
Option A is Correct Answer
Option A is Correct Answer
Answered by
2
Answer:
formula for sector = thetha / 360 x πr2
radius = diameter/2 = 8/2 = 4cm
by applying formula,
135/360 x 22/7 x 4 x 4 =
3/8 x 22 / 7 x 4 x 4 =
3/2 x 22/7 x 4 =
3 x 22/7 x 2 =
6 x 22/7 =
18.85cm2
or
6 π cm2
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