10. A rectangular mini park is 75 m long and 40 m wide. There is a concrete walk 3 m wide around it. Find the area of the concrete walk.

The area of the concrete wall will be the difference of the whole area and the area of the rectangular mini park.

• Area = (81)(46) - (75)(40)
• Area = 3726 - 3000
• Area = 726

• The area of the concrete walk is 726 m²

Step-by-step explanation:

v=l×w

=75×40

=3000c³

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