George has a rectangular wooden deck that measures 2.5 meters by 3.4 meters
that he wants to put a string of lights around.
what length of lights should he buy?
11.8
meters

george wants to put an addition to his wooden deck that is 0.6 meters longer.
what length of lights does george need for the longer wooden deck?
meters
meters

(a) 11.8

               (b) 13

Step-by-step explanation:

Since George wants to put a string of lights around , it means we will have to consider the perimeter of the shape.

Perimeter of a rectangle is given by :

P = 2( L+B)

P = 2 ( 2.5 + 3.4)

P = 2 ( 5.9)

P = 11.8 meters

(b) Since he wants to put an addition to his wooden deck that is 0.6 meters longer , then the perimeter will be the perimeter of the first shape + 2(0.6). We used 2(0.6) because the two lengths of the rectangle must be considered

Therefore, we have

P = 11.8 meters + 2(0.6)

  = 11. 8 + 1.2

= 13 meters

Therefore George needs 13 meters length of light

Option D

Step-by-step explanation:

Given are two position vectors in two dimension.

They are (8,6) and (15,8)

We have to find the dot product.

We know that if

Here two dimension

Hence dot product =

Option D is right