Mathematics
annakoukla02
9

What is the radius of a circle with a sector area of 7π sq ft and an arc whose measure is 70°? 6 feet 10 feet 18 feet

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doyouknowphoebe

sector area = (central angle / 360) * PI * radius^2 7 PI = (70 / 360) * PI * radius^2 radius^2 = 7 *PI / [(70 / 360) * PI] radius^2 = 1 / (1/36) radius^2 = 36 radius = 6 Source: http://www.1728.org/radians.htm

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