Question

The radius of a circle is 1 kilometer. What is the circle's area?

Use 3. 14 for ​. Square kilometers

Answer 1

3.14km^2

Explanation:

area of circle= πr^2

=3.14×1^2

=3.14km^2

Answer 2

• 
  `\boxed{\sf{3.14\ km^2}}`

Explanation:

Given:

• Use the formula of area of circle.

Area of circle:

`\Longrightarrow: \sf{A=\pi r^2}`

Solutions:

• Radius of a circle is 1 kilometer.

`\Longrightarrow: \sf{3.14*1^2}`

Solve.

`\sf{1^2=1*1=1}`

`\sf{3.14*1=\boxed{\sf{3.14\ km^2}}`

• Therefore, the correct answer is 3.14km².

I hope this helps, let me know if you have any questions.