Afirst generation iphone is 115 mm long and 61 mm wide what is the perimeter of the first generation iphone

Perimeter is:
(Length x 2) + (width x 2)

So basically:
(115 mm x 2) + (61 x 2)

Hope that helps and correct me if I'm wrong!

P = 2(l x w) 

115 = length 
61 = width 

155 x 2 = 310 
61 x 2 = 122 

310 + 122 = 432 

You add  the two fractions:

Step 1: Rewriting our equation with parts separated

=1 + 5/6 + 2 + 1/6

Step 2: Solving the whole number parts

= 1 + 2 = 3

Step 3: Solving the fraction parts

= 5/6 + 1/6 = 6/6

Step 4: Reducing the fraction part,
6/6, 6/6=1/1

Step 5: Simplifying the fraction part, 1/1,
1/1 =

Step 6: Combining the whole and fraction parts

3+1=4

Your answer is 4, Nathan waled 4 miles

Hope I helped : )