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A circular garden of diameter 10units is surrounded by a pathway that is 2units wide. Assuming that the center of the garden is at the origin, give the equation that describe the bigger circle. |
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Answer» ong>Answer: 24pi Step-by-step explanation: As you can SEE there are two CONCENTRIC circles (i.e. with same centre). Let the radius of outer circle be R and inner circle be r. r = 10/2 = 5m R = 5 (radius of inner circle) + 2 (width of the PATH) = 7m Area of the path = Area of Outer circle - Area of Inner circle = pi * (R)^2 - pi * (r)^2 = pi * (7)^2 - pi * (5)^2 = 49* (pi) - 25* (pi) = 24pi |
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