Question

Find the area of a circle with a radius of 4. a . Use Ti = 3.14 and round your answer to the nearest hundredth.

Answer 1

Consider that the area (A) of a circle having radius R units, is given by the formula,

`A=\pi R^2`

According to the given problem, the radius of the circle is 4 units,

`R=4`

Then the corresponding area of the circle is calculated as,

`\begin{gathered} A=\pi(4)^2 \\ A=\pi(16) \\ A=16\pi \end{gathered}`

Substitute the value of the constant π in the expression,

`\begin{gathered} A=16\cdot(3.14) \\ A=50.24 \end{gathered}`

Thus, the area of the circle is 50.24 sq. units approximately.