Question

how many times does dhoni have to run around a rectangular field 100m long and 30m wide to cover 3120m

Answer 1

$<b>Heya mate. (^_-). Solution below.$
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$<u>Your Question -</u>$

How many times does Dhoni have to run around a rectangular field 100 m long and 30 m wide, so as to cover a distance of 3120 m?

$<u>Solution -</u>$

Length (l) of the rectangular field = 100 m

Breadth (b) of the rectangular field = 30 m


So, distance covered by Dhoni after covering one round

= perimeter (boundaries) of the rectangular field

= 2 (l + b)

= 2 (100 + 30)

= 2 (130)

= 2 × 130

= 260 m

So, Dhoni will cover a distance of 260 m after running once around the field.



Now, using the unitary method -

Number of rounds to be made for covering a distance of 260 m = 1

Then, number of rounds to be made for covering 1 m = 1/260

So, number of rounds to be made 3120 m
= 1/260 × 3120
= 1×3120/260
= 3120/260
= 12.


$<marquee>Therefore, Dhoni needs to go around the given field 12 times so as to cover 3120 m.</marquee>$
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Thank you.. ;-)

Answer 2

here is my answer of your question