Page 209 - Start Up Mathematics_6

1
1
1
2 2 1 1 2 2

2. Find the area of the shaded region in square units.
2 2 1 1 2 2
1 1
1
2 m
3. Inside a rectangular park of dimension 60 m by 40 m, a path
2 m wide is built in the middle, one along the length and
other along the breadth. What is the area of the remaining 2 m 40 m
part of the park?

60 m
4. Draw (if possible) a polygon inside an equilateral triangle such that the:

(a) area of the polygon is greater than that of the equilateral triangle.
(b) perimeter of the polygon is greater than that of the equilateral triangle.

Values and Life Skills

1. Find the length of a rectangular playground having perimeter 600 m and breadth 90 m.
Should you prefer playing in a playground or playing games on a mobile phone?
2. A road 100 m long and 20 m wide is to be paved with bricks, each measuring 25 cm by
10 cm. Find the number of bricks required. Why should you use zebra crossing while crossing
a road?

Some NCERT Textbook Questions

1. A rectangular piece of land measures 0.7 km by 0.5 km. Each side is to be fenced with
4 rows of wires. What is the length of the wire needed?
2. Avneet buys 9 square paving slabs, each with a side
1
of m. He lays them in the form of a square.
2
(a) What is the perimeter of his arrangement
[Fig. (i)]?

(b) Shari does not like his arrangement. She gets him
to lay them out like a cross. What is the perimeter
of her arrangement [Fig. (ii)]? Fig. (i) Fig. (ii)

(c) Which has greater perimeter?
(d) Avneet wonders if there is a way of getting an even greater perimeter. Can you find a
way of doing this? (The paving slabs must meet along complete edges, i.e., they cannot
be broken.)
3. A room is 4 m long and 3 m 50 cm wide. How many square metres of carpet is needed to
cover the floor of the room?

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