### Triangles | Chapter 6 Exercise 6.4 Question 8:

ABC and BDE are two equilateral triangles such that D is the mid-point of BC. Ratio of the area of triangles ABC and BDE is

(A) 2 : 1 (B) 1 : 2 (C) 4 : 1 (D) 1 : 4

**Solution:** Detailed explanation of question 8 is given in the below image and YouTube video.

### Triangles | Chapter 6 Exercise 6.4 Question 9:

Sides of two similar triangles are in the ratio 4 : 9. Areas of these triangles are in the ratio

(A) 2 : 3 (B) 4 : 9 (C) 81 : 16 (D) 16 : 81

**Solution:** Detailed explanation of question 9 is given in the below image and YouTube video.