What is the circumference and area of a circle with a radius of 4 meters? Round your answer to the nearest tenth.
Circumference: ___ m
Area:___ m2
(Use 3.14 for Pi.)
+9464 circumference = 2 * pi * radius
Plug in 4 meters for radius and 3.14 for pi .
circumference ≈ 2 * 3.14 * 4 m
Multiply these together.
circumference ≈ 25.1 m
area = pi * radius2
Plug in 4 meters for radius and 3.14 for pi .
area ≈ 3.14 * (4m)2
Square the 4m .
area ≈ 3.14 * 16m2
Multiply.
area ≈ 50.2 m2
