To find the area of each right-angle triangle, we use the formula:
Area = ½ × base × height
In a right-angle triangle, the two sides that form the right angle are the base and the height. We multiply them together and then divide by 2.
Let’s go through each one step by step.
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Problem 1:
Base = 6 mm
Height = 4 mm
Area = ½ × 6 × 4 = 3 × 4 =
12 mm²
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Problem 2:
Base = 9 cm
Height = 4 cm
Area = ½ × 9 × 4 = 4.5 × 4 =
18 cm²
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Problem 3:
Base = 7 mm
Height = 10 mm
Area = ½ × 7 × 10 = 3.5 × 10 =
35 mm²
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Problem 4:
Base = 14 m
Height = 6 m
Area = ½ × 14 × 6 = 7 × 6 =
42 m²
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Problem 5:
Base = 10 cm
Height = 14 cm
Area = ½ × 10 × 14 = 5 × 14 =
70 cm²
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Problem 6:
Base = 50 mm
Height = 20 mm
Area = ½ × 50 × 20 = 25 × 20 =
500 mm²
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All calculations have been checked and verified.
Final Answer:
1) 12 mm²
2) 18 cm²
3) 35 mm²
4) 42 m²
5) 70 cm²
6) 500 mm²
Parent Tip: Review the logic above to help your child master the concept of finding the area of a triangle worksheet.
