# Test: Circles II - Challenging

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Question 1:   Find the radius of the following circle:
$2\sqrt{3}$
$\frac{3\sqrt{3}}{2}$
$3$
$3.5$
Question 2:   Find the area of a circle with the diameter $12.5cm$
$122.72c{m}^{2}$
$152.41c{m}^{2}$
$490.87c{m}^{2}$
$315.36c{m}^{2}$
Question 3:   Find the circumference of a circle with the diameter $13cm$
$20.42cm$
$61.26cm$
$40.84cm$
$81.68cm$
Question 4:   What is the radius of a circle with the circumference $26\pi cm$?
$19.5cm$
$13cm$
$6.5cm$
$26cm$
Question 5:   Find $TA$ if line $t$ is the tangent to a circle:
$6cm$
$11cm$
$12cm$
$9cm$
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