Question

What is the area of a circle with a radius of 4 cm? Use 3.14 for pi and round to the nearest hundredth. Answer value

Answer 1

$\textit{area of a circle}\\\\A=\pi r^2~~\begin{cases}r=radius\\[-0.5em]\hrulefill\\r=4\end{cases}\implies A=\pi (4)^2\implies \stackrel{using~\pi =3.14}{A=50.24}$

Answer 2

Answer:

The area of circle is 50.24 cm².

Step-by-step explanation:

Here's the required formula to find the area of circle :

$\longrightarrow{\sf{\pmb{Area_{(Circle)} = \pi{r}^{2}}}}$

• π = 3.14
• r = radius

Substituting all the given values in the formula to find the area of circle :

$\longrightarrow{\sf{Area_{(Circle)} = \pi{r}^{2}}}$

$\longrightarrow{\sf{Area_{(Circle)} = 3.14{(4)}^{2}}}$

$\longrightarrow{\sf{Area_{(Circle)} = \dfrac{314}{100}{(4 \times 4)}}}$

$\longrightarrow{\sf{Area_{(Circle)} = \dfrac{314}{100}{(16)}}}$

$\longrightarrow{\sf{Area_{(Circle)} = \dfrac{314}{100} \times 16}}$

$\longrightarrow{\sf{Area_{(Circle)} = \dfrac{5024}{100}}}$

$\longrightarrow{\sf{\underline{\underline{\red{Area_{(Circle)} = 50.24 \: {cm}^{2}}}}}}$

Hence, the area of circle is 50.24 cm².

$\rule{300}{2.5}$