Area of Right Triangle Worksheets - Free Printable

Let’s solve each triangle one by one using the formula:

Area = ½ × base × height

We’ll multiply the base and height, then divide by 2.

---

Problem 1:
Base = 8 cm
Height = 4 cm
Area = ½ × 8 × 4 = ½ × 32 = 16 cm²

---

Problem 2:
Base = 10 mm
Height = 7 mm
Area = ½ × 10 × 7 = ½ × 70 = 35 mm²

---

Problem 3:
Base = 12 mm
Height = 4 mm
Area = ½ × 12 × 4 = ½ × 48 = 24 mm²

---

Problem 4:
Base = 16 m
Height = 3 m
Area = ½ × 16 × 3 = ½ × 48 = 24 m²

---

Problem 5:
This is a tricky one — the height is drawn outside the triangle, but it still counts as long as it’s perpendicular to the base (or its extension).
Base = 9 cm
Height = 4 cm
Area = ½ × 9 × 4 = ½ × 36 = 18 cm²

---

Problem 6:
Again, the height is shown outside, but it’s perpendicular to the base line.
Base = 5 cm
Height = 3 cm
Area = ½ × 5 × 3 = ½ × 15 = 7.5 cm²

---

Final Answer:
1) 16
2) 35
3) 24
4) 24
5) 18
6) 7.5