To solve the problem of finding the area of each trapezoid, we use the formula for the area of a trapezoid:
\[
\text{Area} = \frac{1}{2} \times (\text{Base}_1 + \text{Base}_2) \times \text{Height}
\]
Let's go through each trapezoid step by step.
---
1. Trapezoid 1
-
Dimensions:
- Base 1 = 7 cm
- Base 2 = 9 cm
- Height = 5 cm
Using the formula:
\[
\text{Area} = \frac{1}{2} \times (7 + 9) \times 5
\]
\[
\text{Area} = \frac{1}{2} \times 16 \times 5
\]
\[
\text{Area} = 8 \times 5 = 40 \, \text{cm}^2
\]
Answer: \( 40 \, \text{cm}^2 \)
---
2. Trapezoid 2
-
Dimensions:
- Base 1 = 12 cm
- Base 2 = 8 cm
- Height = 4 cm
Using the formula:
\[
\text{Area} = \frac{1}{2} \times (12 + 8) \times 4
\]
\[
\text{Area} = \frac{1}{2} \times 20 \times 4
\]
\[
\text{Area} = 10 \times 4 = 40 \, \text{cm}^2
\]
Answer: \( 40 \, \text{cm}^2 \)
---
3. Trapezoid 3
-
Dimensions:
- Base 1 = 5 cm
- Base 2 = 6 cm
- Height = 2 cm
Using the formula:
\[
\text{Area} = \frac{1}{2} \times (5 + 6) \times 2
\]
\[
\text{Area} = \frac{1}{2} \times 11 \times 2
\]
\[
\text{Area} = 5.5 \times 2 = 11 \, \text{cm}^2
\]
Answer: \( 11 \, \text{cm}^2 \)
---
4. Trapezoid 4
-
Dimensions:
- Base 1 = 9 m
- Base 2 = 7 m
- Height = 6 m
Using the formula:
\[
\text{Area} = \frac{1}{2} \times (9 + 7) \times 6
\]
\[
\text{Area} = \frac{1}{2} \times 16 \times 6
\]
\[
\text{Area} = 8 \times 6 = 48 \, \text{m}^2
\]
Answer: \( 48 \, \text{m}^2 \)
---
5. Trapezoid 5
-
Dimensions:
- Base 1 = 14 cm
- Base 2 = 6 cm
- Height = 5 cm
Using the formula:
\[
\text{Area} = \frac{1}{2} \times (14 + 6) \times 5
\]
\[
\text{Area} = \frac{1}{2} \times 20 \times 5
\]
\[
\text{Area} = 10 \times 5 = 50 \, \text{cm}^2
\]
Answer: \( 50 \, \text{cm}^2 \)
---
6. Trapezoid 6
-
Dimensions:
- Base 1 = 6 cm
- Base 2 = 11 cm
- Height = 4 cm
Using the formula:
\[
\text{Area} = \frac{1}{2} \times (6 + 11) \times 4
\]
\[
\text{Area} = \frac{1}{2} \times 17 \times 4
\]
\[
\text{Area} = 8.5 \times 4 = 34 \, \text{cm}^2
\]
Answer: \( 34 \, \text{cm}^2 \)
---
Final Answers
\[
\boxed{40, 40, 11, 48, 50, 34}
\]
Parent Tip: Review the logic above to help your child master the concept of trapezoids worksheet answers.