Find the doubling time for a city whose population is growing by 13% per year
1 answer:
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Step-by-step explanation:
Draw a dotted line from b to e
as I've done
you will realize that abfe is a rectangle ,and bced is a trapezium
Area of abfe
=LW
=13ft(10ft)
=130ft^2
Area of bced
=1/2(sum of // sides )height
=1/2(eb+cd)h
h=16ft-10ft
h=6ft
A=1/2(13ft+6ft)×6ft
=19ft(3ft)
=57ft^2
Total areal =(57+130)ft^2
=187ft^2
