Answer:
brs 4000
Step-by-step explanation:
You want the cost of grassing a 5 m wide path inside the boundary of a rectangular garden 30 long and 20 m wide, at brs 10/m².
Area
The centerline of the path is 30 -5 = 25 m long and 20 -5 = 15 m wide. The total length of the centerline is 2(25 +15) = 80 m. The area of the path is the product of this length and the path width:
A = (80 m)(5 m) = 400 m²
Cost
The cost is brs 10 for each square meter, so the total cost is ...
(brs 10)(400 m²) = brs 4000
The cost of grassing the path is brs 4000.
