Grade 7 Unlimited Math Practice: Area and Circumference

If the diameter of a circle is 23, what is the circumference?

$23\pi$

$33.0625\pi$

$46\pi$

$11.5\pi$

If the diameter of a circle is 8, what is the area?

$32\pi$

$16\pi$

$8\pi$

$4\pi$

If the radius of a circle is 6.5, what is the area?

$42.25\pi$

$10.5625\pi$

$26\pi$

$3.25\pi$

If the diameter of a circle is 16, what is the area?

$64\pi$

$32\pi$

$16\pi$

$8\pi$

If the diameter of a circle is 11, what is the area?

$5.5\pi$

$11\pi$

$22\pi$

$30.25\pi$