Question
Estimate the area of the circle to the nearest unit with a diameter of 8 centimeters
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The formula for the area of a circle is A = πr^2, where r is the radius of the circle.
Since the diameter of the circle is 8 centimeters, the radius is half of that, which is 4 centimeters.
Substituting this value into the formula, we get:
A = π(4)^2
A = 16π
To estimate the area to the nearest unit, we need to approximate the value of π. A common approximation for π is 3.14.
So,
A ≈ 16 x 3.14
A ≈ 50.24
Therefore, the estimated area of the circle to the nearest unit is 50 square centimeters.
Since the diameter of the circle is 8 centimeters, the radius is half of that, which is 4 centimeters.
Substituting this value into the formula, we get:
A = π(4)^2
A = 16π
To estimate the area to the nearest unit, we need to approximate the value of π. A common approximation for π is 3.14.
So,
A ≈ 16 x 3.14
A ≈ 50.24
Therefore, the estimated area of the circle to the nearest unit is 50 square centimeters.