If you walked 5 miles down a trail and then walked 2 1/4 miles back, how many miles away are you from your starting point?

2.75 miles

Step-by-step explanation:

Given :you walked 5 miles down a trail and then walked 2 1/4 miles back

To Find :how many miles away are you from your starting point?

Solution :

He traveled distance form starting point = 5 miles

He then walked back and traveled distance =

Distance between starting point and current position= 5 - 2.25 = 2.75 miles

Hence you are 2.75 miles away from your starting point

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2