Answer: The diameter of circle is 7 inches and its approximate area is 38.5 square inches.
Step-by-step explanation:
Given : The radius of a circle is 3.5 inches.
Diameter of circle is double the radius.
i.e. Diameter of circle will be 2(3.5)=7 inches.
We know that the area of a circle is given by :-
[tex]\text{Area}=\pi r^2[/tex], where r is the radius of the circle.
Substitute r=3.5 in the formula, we get
[tex]\text{Area}=(3.14159265359)\times (3.5)^2=38.4845100065\approx38.5\text{ square inches}[/tex]
Hence, the diameter of circle is 7 inches and its approximate area is 38.5 square inches.
