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What is the area of the jogging track which is 2 m wide that runs along the perimeter of a rectangle 20 m × 18 m inside it?
Question

What is the area of the jogging track which is 2 m wide that runs along the perimeter of a rectangle 20 m × 18 m inside it?

A.

136 m2136\ m^2​​

B.

168 m2168 \ m^2​​

C.

200 m2200\ m^2​​

D.

140 m2140\ m^2​​

Correct option is B

Given:

Length of the rectangle = 20m

Breadth of the rectangle = 18m

Width of the jogging track = 2m

Formula Used:

Area of rectangle = Length×\times Breath 

​​​Solution:

Length of the jogging track = 20+2+2 = 24

Breadth of the jogging track = 18+2+2 = 22

The area of the jogging track = [(24×22) – (20× 18)]

= [(528 – 360)]

=168

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