Question

Please help me with vivid explanation​

Answer 1

864 m²

Explanation:

• First calculate the total area of the rectangular field

The area of a rectangle is given by the product of the length and the width

let A be the total area

A = 100*120

A = 12000 m²

Calculate the area of the small rectangles

• Let A' be the total area of the four small rectangles and A" the area of one small rectangle

• A' = 4 A"
• A' = 4 [(
  `(120-4)/(2)`)*(
  `(100-4)/(2)`)]
• A' = 4*58*48
• A' = 11136 m²

• Substract the A' from A to get the area of the road

Let A"' be the area of the road

A"' =A-A'

A"' = 12000-11136

A"' = 864 m²