Step-by-step explanation:
this is how you solve it :)
Answer:
the area of the sidewalk is 336 Sq. ft.
8 + 25 = 33
8 + 9 = 17
17×33 = 561
25 × 9 =225
561-225=336
-93.5
let the number be y
1/2 × y + 49 =2 1/4
y/2 +49 =9/4
y/2 =9/4-49
y/2 = 9-196/4
y/2 = -187/4
cross multiply
4y = -374
y = -93.5
