Question

Find the circumference of this circle
using 3 for 7.
C ~ [?]
2.
C = 27r

Answer 1

`\displaystyle C = 12`

Explanation:

remember circumference formula

`\displaystyle C = 2\pi r`

given that,r=2 thus substitute:

`\displaystyle C = 2\pi .2`

simplify mutilation:

`\displaystyle C = 4\pi`

substitute the given value of π:

`\displaystyle C = 4.3`

simplify multiplication:

`\displaystyle C = 12`

and we are done!

Answer 2

C = 12.

Explanation:

Given :-

• Radius of circle , r = 2.
• Value of pi, π = 3

To find :-

• Circumference of circle

Formula for finding circumference of circle;

Circumference of circle = 2 × π × radius.

Solution :-

Circumference of circle = 2 × π × radius.

• Substitute the value of radius into the formula.

Circumference of circle = 2 × π × 2

• Multiply ; 2 × 2

Circumference of circle = 4 π.

• plug 3 as π.

Circumference of circle = 4 × 3

• Multiply to get

Circumference of circle = 12