Question

area of a circle with diameter with 140, use 3.14 for pi

Answer 1

To calculate the area of a circle, you can use the formula:

\[
\text{Area} = \pi r^2
\]

where \( r \) is the radius of the circle. The radius is half of the diameter. Given that the diameter is 140, the radius \( r \) is:

\[
r = \frac{\text{diameter}}{2} = \frac{140}{2} = 70
\]

Now, substituting the radius into the area formula:

\[
\text{Area} = 3.14 \times (70)^2
\]

Calculating \( (70)^2 \):

\[
(70)^2 = 4900
\]

Now substitute this value into the area formula:

\[
\text{Area} = 3.14 \times 4900
\]

Now, calculate \( 3.14 \times 4900 \):

\[
\text{Area} = 15386
\]

Thus, the area of the circle is \( 15386 \) square units.