Following figures are formed by joining six unit squares. Which figure has the smallest perimeter?

1

(a)

(ii)

(b)

(iii)

(c)

(iv)

(d)

(i)

The side of a square is 10 cm. How many times will the new perimeter become, if the side of the square is doubled?

1

(a)

2 times

(b)

4 times

(c)

6 times

(d)

8 times

The perimeter of an equilateral triangle of side 5 cm each is

1

(a)

\(\frac { \sqrt { 3 } }{ 4 } \times 15cm\)

(b)

\(\frac { \sqrt { 3 } }{ 4 } \times 10cm\)

(c)

10 cm

(d)

15 cm

Perimeter of a rectangle =

1

(a)

Length x Breadth

(b)

Length + Breadth

(c)

2 x (Length + Breadth)

(d)

2 x (Length x Breadth)

The perimeter of an equilateral triangle of side 1 m is

1

(a)

1 m

(b)

2 m

(c)

3 m

(d)

6 m

The amount of region enclosed by a plane closed figure is called its --------

1

(a)

area

Standard unit of area is ------

1

(a)

cm² or m².

The area of a rectangular park whose length is 30 m and width is 20 m, is------

1

(a)

600 sq m.

The perimeter of a square whose area is 64 m² is -----

1

(a)

32m

If the side of a square is doubled, then its area becomes four times.

1

(a) False

(b) True

Perimeter of rectangle is (l + b).

1

(a) True

(b) False

Area of a square is doubled if the side of the square is doubled

1

(a) True

(b) False

A farmer who wants to fence his field, must find the perimeter of the field.

1

(a) False

(b) True

Find the perimeter of the given figure

2

(a)

Find the perimeter of the following figures

2

(a)

Find the perimeter of the following figures

2

(a)

How many equilateral triangles of a side 2 cm long can be formed with a wooden strip of length 60 cm?

2

(a)

A piece of wire is 12 cm long. What will be the length of each side, if the wire is used to form an equilateral triangle?

2

(a)

Find the areas of the rectangles whose sides are 2 km and 3 km

2

(a)

Give five examples of situations where you need to know the perimeter.

2

(a)

An athlete takes 10 rounds of a rectangular field. which is 30 m long and 20 m wide. Find the total distance covered by him.

2

(a)

Measure and write the lengths of the four sides of a page of your notebook. The sum of the lengths of the four sides.
= AB + BC + CD + DA
=__cm+__cm+__cm+__cm=__cm
What is the perimeter of the page?

3

(a)

Find the perimeter of the following figures.

Perimeter = AB + BC + CD + DE + EF + FA
=__+__+__+__+__+__+__=__

3

(a)

A piece of string is 30 cm long. What will be the length of each side, if the string is used to form a regular hexagon?

3

(a)

Five square flower beds each of sides 1 m are dug on a piece of land 5 m long and 4 m wide. What is the area of the remaining part of the land?

4

(a)

By splitting the following figures into rectangles, find their areas (the measures are given in centimetres).

4

(a)