To find the area of the circle:
⇒ must know the area's formula ⇒ [tex]\pi r^2[/tex]
Let's consider the information given
- diameter's length is 7 in
⇒ the radius' length is half of the diameter
⇒ thus the radius' length is 3.5 in
Let's calculate the area:
[tex]Area=\pi r^2=\pi (3.5^2)=12.25\pi in^2[/tex]
The problem asks us to leave the answer in terms of '[tex]\pi[/tex]' which means that we won't multiply '[tex]\pi[/tex]' to the final answer, but leave it there,
Answer: 12.25[tex]\pi in^2[/tex] or Choice (B)
Hope that helps!
