Let’s solve each triangle one by one.
We’ll use the formula for area of a triangle:
Area = (base × height) ÷ 2
Remember: The height must be perpendicular to the base — it’s the “straight up and down” distance from the base to the opposite corner.
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Triangle 1:
Base = 10 ft, Height = 6 ft
Area = (10 × 6) ÷ 2 = 60 ÷ 2 =
30 sq ft
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Triangle 2:
Base = 12 m, Height = 4 m
Area = (12 × 4) ÷ 2 = 48 ÷ 2 =
24 sq m
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Triangle 3:
Base = 5.4 in, Height = 8 in
Area = (5.4 × 8) ÷ 2 = 43.2 ÷ 2 =
21.6 sq in
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Triangle 4:
Base = 7 cm, Height = 3 cm
Area = (7 × 3) ÷ 2 = 21 ÷ 2 =
10.5 sq cm
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Triangle 5:
Base = 10 ft, Height = 6 ft
Area = (10 × 6) ÷ 2 = 60 ÷ 2 =
30 sq ft
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Triangle 6:
Base = 9 yd, Height = 4 yd
Area = (9 × 4) ÷ 2 = 36 ÷ 2 =
18 sq yd
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Triangle 7:
Base = 16 in, Height = 12 in
Area = (16 × 12) ÷ 2 = 192 ÷ 2 =
96 sq in
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Triangle 8:
Base = 12 ft, Height = 7 ft
Area = (12 × 7) ÷ 2 = 84 ÷ 2 =
42 sq ft
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Triangle 9:
Base = 10 m, Height = 6 m
Area = (10 × 6) ÷ 2 = 60 ÷ 2 =
30 sq m
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Final Answer:
1) 30 sq ft
2) 24 sq m
3) 21.6 sq in
4) 10.5 sq cm
5) 30 sq ft
6) 18 sq yd
7) 96 sq in
8) 42 sq ft
9) 30 sq m
Parent Tip: Review the logic above to help your child master the concept of triangle area worksheet.
