Question

Write the equation that represents the relationship between n the number of triangles and p the perimeter of the figures formed.

Answer 1

Let's find the perimeter of the figures:
1st=6+6+5=17
2nd=6+6+5+5=22
3rd =6+6+5+5+5=27
We can see that as the no. of triangles increase the perimeters increase by the corresponding no. of 5s
Do you get this?

Answer 2

yea

Answer 3

Let n be the no. of triangles then Perimeter is given as
P=12+5n
Do you get this?

Answer 4

it seems so

Answer 5

Read it again and do let me know if you have any doubt:)