SEAMO 2023 — Paper D — Grade 7–8 Question 8

Question 8

Two concentric circles bound a shaded annulus. A chord of the larger circle has length $\sqrt{20}$ cm and is tangent to the smaller circle. Find the annulus area.

Question illustration

$4\pi$
$5\pi$
$6\pi$
$8\pi$
$10\pi$