Question

I need this question done ASAP

Answer 1

Answer:18

Step-by-step explanation:formula for circle:2 pi r squared

instead of pi put three

then all you have to do is multiply them

so two times pi is six and then times radius so

six times three

18

Answer 2

18.85 unit.

Explanation:

The circumference of a circle is the distance around the circle.

It is equal to 2πr, where r is the radius of the circle.

In this case:

Radius(r)= 3 units

`\sf Circumference = 2\pi r`

Substitute the value:

`\sf Circumference = 2* \pi * 3`

`\sf Circumference= 6* 3.141592654`

`\sf Circumference= 18.84955592`

`\sf Circumference= 18.85\textsf{ (units) in 2 d.p}`

Therefore, the circumference of a circle with radius 3 is approximately equal to 18.85 unit.