Topic : Length-Pythagorean Theorem
1.
2.
from: category_eng

1.

Ans: D

2.

Ans: A

1.
Make a triangle
2.
Use your common sense
3.

4.

5.
(1)ab=50, a^2 +b^2 =100.
6.

7.
Make a triangle
8.

9.
What do u need to calculate the area of trapezoid?
10.

1. A
Make a triangle
2. B
Use your common sense
3.
4. d
5. D
(1)ab=50, a^2 +b^2 =100.
6. E
7. B
Make a triangle
8.
9. D
Need an Idea
What do u need to calculate the area of trapezoid?
Area = 1/2 (b_1 + b_2 )h.
What do we have?
(1) RU is the b_2. so it's enough.
(2) Using TU, we can figure out the base B_2 using Pythagorean Theorem.
10. C