AB is a chord of a circle with centre O and radius 4cm. AB is of length 4 cm. Find the areas of the sector of the circle formed by chord AB.
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Answer:
It is 176/21 =8.38 cm
HERE is ur answer bro...
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Area of the sector = 8.381 sq. cm
Step-by-step explanation:
Please find attached the diagram for this question.
O is the center and OA and OB are the radii of the circle = 4cm
AB is a chord of length 4cm.
ABC is an equilateral triangle with all sides 4 cm. Hence all angles will be 60 degrees.
Area of the sector of the circle formed by AB = (θ/360)(πr^2 )
= 60/360 * 22/7 * 4 * 4
= 22 * 16/42
= 8.381 sq. cm
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