Algebra

A park has a walking track in the shape of an irregular quadrilateral. The four side lengths of the track are $8a$8`a` m, $6b$6`b` m, $2a$2`a` m, and $3b$3`b` m.

a

Write an expression for the length of one complete lap around the track.

b

What is the length of one lap around the track if $a=15$`a`=15 and $b=5$`b`=5?

Easy

Approx 2 minutes

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