To find the area of a right-angled triangle, we use the formula provided in the hint:
Area = ½ × base × height
This means you multiply the bottom length (base) by the vertical height, and then divide that number by 2. Let's solve each problem step-by-step.
1)
* Base = 6 mm
* Height = 4 mm
* Calculation: $6 \times 4 = 24$. Then, $24 \div 2 = 12$.
* Area =
12 mm²
2)
* Base = 9 cm
* Height = 4 cm
* Calculation: $9 \times 4 = 36$. Then, $36 \div 2 = 18$.
* Area =
18 cm²
3)
* Base = 7 mm
* Height = 10 mm
* Calculation: $7 \times 10 = 70$. Then, $70 \div 2 = 35$.
* Area =
35 mm²
4)
* Base = 14 m
* Height = 6 m
* Calculation: $14 \times 6 = 84$. Then, $84 \div 2 = 42$.
* Area =
42 m²
5)
* Base = 10 cm
* Height = 14 cm
* Calculation: $10 \times 14 = 140$. Then, $140 \div 2 = 70$.
* Area =
70 cm²
6)
* Base = 50 mm
* Height = 20 mm
* Calculation: $50 \times 20 = 1000$. Then, $1000 \div 2 = 500$.
* Area =
500 mm²
Final Answer:
1) 12
2) 18
3) 35
4) 42
5) 70
6) 500
Parent Tip: Review the logic above to help your child master the concept of area of a right triangle worksheet.
