The zigzag river is 114 miles longer than twice the petite river. if the petite river is 46 miles long, how long is the zigzag river?

114+46=160

The zig zag river is 160 miles long.

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

17   x 256=4352

sorry if this is wrong, i'm new.

step-by-step explanation: