1. An architect is making a plan for a new playground. If the picture below is the playground, how much fencing needs to go up to keep the beds in the circle?
GIVEN: the radius (r) of the playground is 14 meters
REQUIRED: the fence needed to encircle the playground or its Circumference or Perimeter
FORMULA: Circumference (C) of the circle = 2πr , where π is pi and r is the radius.
SOLUTION:
C = 2πr
Let pi = 3.14
C = 2 x (3.14) x 14 = 87.92 meters
2. A goat is tethered by a rope 3.5 m long. Find the maximum area that the goat can go.
GIVEN: radius (r) = 3.5 meters
REQUIRED: Area (A) of the circle
FORMULA: Area (A) of a circle ==> A = π r2
SOLUTION: A = (3.14) (3.5) (3.5) = 38.465 square meter
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