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A rectangular pond measures 3 m by 5 m. A concrete walkway of uniform width is constructed around the pond. If the walkway and pond together cover an area of 35 m2, how wide is the walk? (hint: draw a picture)




The walk is_______ meter(s) wide.

Respuesta :

Answer:

2 m

Step-by-step explanation:

A=35

l=3+x

w=5+x

A=l*w

(3+x)(5+x)=35

15+3x+5x+x² = 35

x²+8x-20=0

x=2, -10

it cant have a negative length so x=2

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