If the radius of a circle is 3.5 inches its diameter is inches and its approximate area is square inches

Question

asked Aug 10, 2017 169k views

2 Answers

Seldon · Answer 1 · 2017-08-11T19:06:52+0000

The diameter is 7 inches and the area is 38.465. I got the answer by taking the area of a circle's formula which is

pi r ^2

Joe Morano · Answer 2 · 2017-08-14T03:31:22+0000

Answer:

Diameter = 7 inches

Area of circle is 38.46 inches²

Explanation:

Given :The radius of a circle is 3.5 inches.

We have to find its diameter and area.

Since diameter is twice of radius.

So radius = 3.5 inches

Diameter = 2× 3.5 inches = 7 inches

Area of circle =
$\pi r^2$

Substitute, r = 3.5

Area of circle =
$\pi (3.5)^2$

Simplify , we have,

Area of circle =
$\pi 12.25$

Using π = 3.14

We have,

Area of circle =
38.465

Thus, Area of circle is 38.46 inches²