Express the required calculation in terms of pi
and then round to the nearest tenth.
How much fencing is required to enclose a circular garden whose radius is 19
meters?
The formula for the circumference of a circle is C = 2πr, where r is the radius.
So, the amount of fencing required would be:
C = 2π(19)
C = 38π
Rounding to the nearest tenth:
C ≈ 119.4 meters
To find the amount of fencing required to enclose a circular garden, we need to calculate the circumference of the circle.
The formula for the circumference of a circle is given by:
C = 2πr
where C is the circumference and r is the radius of the circle.
Given: radius = 19 meters.
Plugging in the values, the formula becomes:
C = 2π(19)
Simplifying:
C = 38π meters
To round the answer to the nearest tenth, we need to multiply π by 38 and then round the result to the nearest tenth.
Using the approximation π ≈ 3.14, we have:
C ≈ 38 × 3.14
C ≈ 119.32 meters
Therefore, the amount of fencing required to enclose the circular garden is approximately 119.3 meters when rounded to the nearest tenth.