Answer:
<u>Distance formula between points (x₁, y₁) and (x₂,y₂) is:</u>
- d =

<u>Substitute (x₁, y₁) with (6, 5), (x₂,y₂) with (x, y) and d with 5:</u>
- 5 =

Correct choice is A

★ ∆ ABC is similar to ∆DEF
★ Area of triangle ABC = 64cm²
★ Area of triangle DEF = 121cm²
★ Side EF = 15.4 cm

★ Side BC

Since, ∆ ABC is similar to ∆DEF
[ Whenever two traingles are similar, the ratio of the areas of two similar triangles is equal to the square of the ratio of their corresponding sides. ]

❍ <u>Putting the</u><u> values</u>, [Given by the question]
• Area of triangle ABC = 64cm²
• Area of triangle DEF = 121cm²
• Side EF = 15.4 cm

❍ <u>By solving we get,</u>






<u>Hence, BC = 11.2 cm.</u>

★ Figure in attachment.

What is it
I don't get it done
Answer: #7 is A and #8 is D
Step-by-step explanation: