Question

Find the area of a sector of a circle with radius 21 cm if angle of the sector is 120 degree .​

Answer 1

Answer:

Given: Radius of the circle = 21cm. Central angle = 120°

To Find: Area of a sector of a circle.

Solution: Area of the sector of a circle = Angle degree/360° x πr² Since r = 21 cm and the central angle = 120° Substituting the values - = 120°/ 360° x 22/7 x 21² = 1/3 x 22/7 x 21 x 21. = 22 x 21 x21 / 7 x 3. = 22 x 21.

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Question is:

Find the area of a sector of a circle with radius 21 cm if angle of the sector is 120 degree .

answer:

462

process:

Area of the sector of a circle = Angle degree/360° x πr² Since r = 21 cm and the central angle = 120° Substituting the values - = 120°/ 360° x 22/7 x 21² = 1/3 x 22/7 x 21 x 21. = 22 x 21 x21 / 7 x 3. = 22 x 21 = 462

answer by ❤️ ☞ Meera