Question

Please help me to solve this

Answer 1

Answers:

1. The distance travelled by Priya, if she takes 3 rounds of a square park of side 25 m is _________.

Sol: The distance travelled by Priya (1 round) will be equivalent to the perimeter of the square.

$\boxed {\bf {\pink {Perimeter_{(square)} = 4 \times side}}}$

Perimeter = 4×25

Perimeter = 100 m

But, Priya takes 3 rounds around the park, so,

100×3 = 300 m

The distance travelled by Priya, if she takes 3 rounds of a square park of side 25 m is 300 m.

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2. If the length of a rectangle is 60 cm and breadth is 40 cm, then its perimeter is __________.

Sol: $\boxed {\bf {\red {Perimeter_{(rectangle)} = 2(length+breadth)}}}$

Perimeter = 2(60+40)

Perimeter = 2×100

Perimeter = 200 cm

If the length of a rectangle is 60 cm and breadth is 40 cm, then its perimeter is 200 cm

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3. The perimeter of a rectangle whose length and breadth are 5 cm and 2 cm is _________.

Sol: $\boxed {\bf {\red {Perimeter_{(rectangle)} = 2(length+breadth)}}}$

Perimeter = 2(5+2)

Perimeter = 2×7

Perimeter = 14 cm

The perimeter of a rectangle whose length and breadth are 5 cm and 2 cm is 14 cm.

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4. The perimeter of a regular pentagon is _____ × side.

Sol: As a pentagon has 5 sides and it is a regular pentagon, hence it's all sides are equal.

So,

The perimeter of a regular pentagon is 5 × side.

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5. The perimeter of a square is 36 cm, then its sides are ________.

Sol: $\boxed {\bf {\pink {Perimeter_{(square)} = 4 \times side}}}$

36 = 4s

$\sf \dfrac {36}{4}$ = s

9 cm = side

The perimeter of a square is 36 cm, then its sides are 9 cm.