Warm-Up: Circle

src/Warm-Ups/Circle/main.typ

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+#import "@local/handout:0.1.0": *
+#import "@preview/cetz:0.4.2"
+
+#show: handout.with(
+  title: [Warm-Up: Circle],
+  by: "Mark",
+)
+
+#problem()
+Find the area of the shaded region. \
+The same figure is drawn twice for convenience.
+
+#let fig = align(center, cetz.canvas({
+  import cetz.draw: *
+  let s = 0.5
+
+  // Background
+  line(
+    (0 * s, 0 * s),
+    (12.5 * s, 0 * s),
+    (12.5 * s, 16 * s),
+    (0 * s, 16 * s),
+    close: true,
+    fill: oblue,
+    stroke: none,
+  )
+
+  // White tri
+  line(
+    (0 * s, 0 * s),
+    (0 * s, 15 * s),
+    (8 * s, 0 * s),
+    close: true,
+    stroke: none,
+    fill: white,
+  )
+
+  // White circle
+  arc(
+    (4 * s, 7.5 * s),
+    radius: 8.5 * s,
+    fill: white,
+    stroke: none,
+    start: -61.9deg,
+    delta: 180deg,
+    anchor: "origin",
+  )
+
+  // Circle
+  arc(
+    (4 * s, 7.5 * s),
+    radius: 8.5 * s,
+    fill: none,
+    stroke: (thickness: 1mm),
+    start: -61.9deg,
+    delta: 180deg,
+    anchor: "origin",
+  )
+
+  // tru
+  line(
+    (0 * s, 15 * s),
+    (8 * s, 0 * s),
+    close: false,
+    stroke: (thickness: 1mm),
+    fill: none,
+  )
+
+  // Outline
+  line(
+    (0 * s, 0 * s),
+    (12.5 * s, 0 * s),
+    (12.5 * s, 16 * s),
+    (0 * s, 16 * s),
+    close: true,
+    fill: none,
+    stroke: (thickness: 1mm),
+  )
+
+  circle((4 * s, 7.5 * s), radius: 3mm * s, fill: black, stroke: none)
+
+  content((0 * s, 7.5 * s), anchor: "east", padding: 4mm * s, text(
+    [15],
+    size: 12mm * s,
+  ))
+
+  content((4 * s, 0 * s), anchor: "north", padding: 4mm * s, text(
+    [8],
+    size: 12mm * s,
+  ))
+}))
+
+#table(
+  stroke: none,
+  align: center,
+  columns: (1fr, 1fr),
+  inset: 5mm,
+  fig, fig,
+);

src/Warm-Ups/Circle/meta.toml

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+[metadata]
+title = "Circle"
+
+[publish]
+handout = true
+solutions = false