Question

10 (a) Find the
and perimeter is 42cm.
b) Find the length of the park whose area is 2400 square m and breadth is 40 m. Also find,
ow much distance will be covered by Sahil, if he completes it's one round?​

Answer 1

Correct question:

Find the length of the park whose area is 2,400 m² and breadth is 40 m. Also find, how much distance will be covered by Sahil, if he completes it's one round.

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Given:

• Area of the park = 2,400 m²
• Breadth of the park = 40 m

To find:

• Length of the park.
• Distance covered by Sahil, if he completes one round around the park.

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Solution:

The park being referred in the question is a rectangular park. So, we will apply the formula to find the area of rectangle.

We know that,

$\boxed {\mathfrak {\purple {Area\ of\ rectangle = l \times b}}}$

Substitute the values,

2,400 = 40l

$\sf \dfrac {2,400}{40} = l$

$\sf \dfrac {2,40\cancel{0}}{4\cancel{0}} = l$

$\boxed {\bf {\orange {60\ m = l}}}$

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Now, if Sahil goes once around the park, then we will have to find the perimeter of the park.

$\boxed {\mathfrak {\green {Perimeter\ of\ rectangle = 2(l+b)}}}$

Substitute the values,

Perimeter = 2 (60+40)

Perimeter = 2×100

$\boxed {\bf {\red {Perimeter=200\ m}}}$

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Answers:

• Length of the rectangular park is 60 m.
• Sahil will have to cover a distance of 200 m, if he goes once around the park.