MEDAL AND FAN
1 All circles are similar to each other.

True
False

2 Find the exact area of a circle having the given circumference.

8

A =

4√2
16
64

3 Find the exact area of a circle having the given circumference.

3

A =

2.25
3
9

4 Find the exact circumference of a circle with an area equal to 36 sq. in.

12
18
324

Question

MEDAL AND FAN 
1 All circles are similar to each other.

True
False

2 Find the exact area of a circle having the given circumference.

8

A =

4√2
16
64

3 Find the exact area of a circle having the given circumference.

3

A =

2.25
3
9

4 Find the exact circumference of a circle with an area equal to 36 sq. in.

12
18
324

mathstudent55 · Answer

1. T

mathstudent55 · Answer

2. Use the circumference formula to find the radius. Then use the area formula to find the area.

mathstudent55 · Answer

3. Solve it same way as 2.

mathstudent55 · Answer

4. Use the area formula to find the radius. Then use the circumference formula to find the circumference.

mathstudent55 · Answer

If you have questions, just ask.

anonymous · Answer

cant remember the area formula for a circle

anonymous · Answer

can you work out number 2 for me?

anonymous · Answer

@mathstudent55

mathstudent55 · Answer

Here are the formulas you need.

$ \Large C_{circle} = 2 \pi r$

$\Large A_{circle} = \pi r^2$

anonymous · Answer

|dw:1438148434752:dw|