Grade 7 Math Unlimited Practice: Area to/from Circumference

1. If the circumference of a circle is $16\pi$ , what is the area of the circle?

$32\pi$

$8\pi$

$64\pi$

$16\pi$

2. If the circumference of a circle is $26\pi$ , what is the area of the circle?

$52\pi$

$169\pi$

$26\pi$

$13\pi$

3. If the area of a circle is $121\pi$ , what is the circumference of the circle?

$44\pi$

$11\pi$

$22\pi$

$30.25\pi$

4. If the area of a circle is $25\pi$ , what is the circumference of the circle?

$5\pi$

$10\pi$

$20\pi$

$6.25\pi$