Question

Which is the area of a circle with a radius of 5 units? (use 3.14 for )?

Answer 1

The area of a circle is A=πr².
Since π is about 3.14 we can substitute that into the equation.
So A=3.14×r²
We can substitute the given radius for r.
A= 3.14 × 5²
When a number is squared, or has the two over it, we multiply it by itself.
5 × 5= 25
A= 3.14 × 25
Simplify this and the area of the circle is about 78.5
A≈78.5

Answer 2

The area of circle is 78.5 units².

Explanation:

Area of the circle is defined by the formula A = π r²

Here r = radius of the circle and value of π = 3.14

Now by putting these values in the formula we can get area of the circle.

A = (3.14) × 5²

A = 3.14 × 25

A = 78.5 units²

The area of circle is 78.5 units²