Calculating Area of Triangles
Name: _______________________________
Date: _______________________________
Remember: Area of a triangle = ½ × base × height
Section A: Calculate the area of each triangle
1.
Base = 8 cm, Height = 5 cm
Area = ____________________ cm²
2.
Base = 12 m, Height = 7 m
Area = ____________________ m²
3.
Base = 15 mm, Height = 10 mm
Area = ____________________ mm²
4.
Base = 20 cm, Height = 9 cm
Area = ____________________ cm²
5.
Base = 14 m, Height = 11 m
Area = ____________________ m²
6.
Base = 18 cm, Height = 13 cm
Area = ____________________ cm²
Section B: Problem solving
7. A triangular garden has a base of 24 metres and a height of 16 metres. What is the area of the garden?
Area = ____________________ m²
8. A triangular sail on a boat has a base of 3.5 metres and a height of 6 metres. Calculate the area of the sail.
Area = ____________________ m²
9. A triangle has an area of 60 cm² and a base of 12 cm. What is the height of the triangle?
Height = ____________________ cm
10. A triangle has an area of 84 m² and a height of 14 m. What is the length of the base?
Base = ____________________ m
Section C: Challenge
11. A triangular piece of land has a base of 45 metres and a height of 32 metres. If the land costs $150 per square metre, what is the total cost of the land?
Area = ____________________ m²
Total cost = $ ____________________