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OpenStudy (anonymous):
Find the circumference and area of a circle with a diameter of 22 inches. Leave your answers in terms of pi. a. C = 11π; A = 44π b. C = 22π; A = 44π c. C = 11π; A = 121π d. C = 22π; A = 121π
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OpenStudy (mandre):
Radius is half diameter, i.e. 11 inches. Circumference is 2 * pi * r Area is pi * r^2. Simple math right? :)
OpenStudy (yttrium):
Just be reminded of this. C = 2(pi)r A = pi(r)^2 And radius is half of the diameter. :)
OpenStudy (anonymous):
d. C = 22π; A = 121π then
OpenStudy (yttrium):
Yes!
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