Question

What is the perimeter of a polygon with sides measuring; (a) cm,(a+1) cm;(a+2) cm and 3(a+3)?

Answer 1

To find the perimeter of a polygon, simply add the sides.
Here, the sides are: a, a+1, a+2, and 3(a+3)
So,

`a+(a+1)+(a+2)+3(a+3)`
Now, do the distributive property and combine like terms,
`a+a+1+a+2+3a+9`
`6a+12`

The answer is 6a + 12. Hope this helps and have a terrific day!