1.Find the
perimeter of a rectangular field which is 40 m long and 20 m wide.
2.Find
breadth of rectangle whose perimeter is 120m and length is 36m.
3. Find the
length of a rectangle whose perimeter is 100 cm and breadth is 15cm.
4.Find the
area of a rectangle whose length is 5m and breadth 45cm.
5. The area
of rectangular garden which is 52 meters long is 1820sq.m. find the width of the garden.
6. Find the
length of the rectangular plot whose breadth is 40m and area is 3600 sq.m
7. Find the
cost of fencing of a square part of side 200m at the rate of Rs. Per meter.
8.Rama runs
around a square park of side 50m. Bulbul runs around a rectangular park with
length 60m and breadth 45m. Who covers
less distance?
9.A flower
bed is in the shape of a square with a side 3.5m.Each side is to be fenced with
4 rows of rupees. Find the cost of rope
required at Rs. 15 per meter.
10.A piece
of wire is 60cm, long. What will be the length of each side if the string is
used to form:
i) An equilateral
triangle
ii)a square
iii)a
regular hexagon
ix) a
regular pentagon.
11. Bunty
and bubbly go for jogging ever morning.
Bunty goes around a square park of side 80 m. Bubly goes around a rectangular park with length 90m
and breadth 60m. If they both take 3
rounds who covers grater distance and b how much?
12. The
length of a rectangle is twice of its breadth.
If its perimeter is 36 cm. find the dimensions of the rectangle.
13. Two
sides of a triangle are 12cm and 14cm The perimeter of the triangle is
36cm. What is the length of third side?
14. The area
of rectangular frame is 1,125sq.cm If its width is 25cm, what is its length?
15.The length of a rectangular field is 60m and the
breadth is half of its length. Find the
area of the field.
16. The area
of rectangular plot is 2000 square meters and the sides are in the ratio 3:2
What is the perimeter?
17. The
length and breadth of a room are 6m and 4m respectively. How many square meters of carpet is required
to completely cover the floor of the room? If the carpet costs Rs. 240 a square
meter, what will be the total cost of completely covering the floor?
18. The
length of a rectangular floor is 20m.
more than its breadth. If the perimeter
of the floor is 280m, what is its length?
19. A
rectangular plot of land is 240m. b 200m.
The cost of fencing per meter is Rs. 30.
What is the cost of fencing the entire field?
20. The side
of a square field is 120 meters. The
cost of preparing a grass lawn is Rs. 35 per square meter. How much will it cost if the entire field is
converter into a lawn?
Om Sri
Raam Om Sri Raam Om Sri Raam
1.Find the
perimeter of a rectangular field which is 40 m long and 20 m wide.
Sol. l =40 m
, b= 20 m, Perimeter = 2(l+b), p=
2(40+20)= 120 m
2.Find
breadth of rectangle whose perimeter is 120m and length is 36m.
Sol. P= 120m
, l = 36m Perimeter = 2(l+b)
120 = 2(36 + b) = 72 + 2b
2b = 120 – 72 = 48
B= 48/2 = 24 m
3. Find the
length of a rectangle whose perimeter is 100 cm and breadth is 15cm.
Sol. P=
100cm , b = 15cm Perimeter = 2(l+b)
100 = 2(l + 15) = 2l + 30
2l = 100 – 30 = 70
l= 70/2 = 35cm
4.Find the
area of a rectangle whose length is 5m and breadth 45cm.
Sol. length
is 5m, breadth 45cm. Area = l x b = 5 x
45=225
5. The area
of rectangular garden which is 52 meters long is 1820sq.m. find the width of the garden.
Sol. Area of rectangle = 1820 sq.m
Lngth of the rectangle = 52 m
Width = Area / length = 1820/52 = 35
meters.
6. Find the
length of the rectangular plot whose breadth is 40m and area is 3600 sq.m
Sol. Area of rectangle = 3600 sq.m
breadth of the rectangle = 40 m
length = Area / breadth = 3600/40 = 90
meters.
7. Find the
cost of fencing of a square part of side 200m at the rate of Rs. 20 Per meter.
Sol.
Permiter of the park = 4 s = 4 x 200 = 800m
Cost of fencing for one meter of park =
Rs. 20-00
Total cost of the fencing of the park:
20 x 800=16000
8.Rama runs
around a square park of side 50m. Bulbul runs around a rectangular park with
length 60m and breadth 45m. Who covers
less distance?
Side of the
square park = 50m
Perimeter of
the park = 4 x s = 4x 50 = 200m
Distance
covered by rama= 200m, L= 60 and b=45
Perimeter of
the park= 2(l + b)= 2(60 + 45) = 210m
Bulbul
covers more distance.
9.A flower
bed is in the shape of a square with a side 3.5m.Each side is to be fenced with
4 rows of rupees. Find the cost of rope
required at Rs. 15 per meter.
L = 3.5,
perimeter of square = 4s = 4 x 3.5 = 14 cm.
Length of
the roupe 4 sides = 14 x 4= 56cm.
Cost of rope
required at Rs. 15 permeter = 56 x15= Rs. 840
10.A piece
of wire is 60cm, long. What will be the length of each side if the string is
used to form:
Length of wire = 60m
The
perimeter of an equilateral triangle with side let x
3x = 60 There fore x = 20
An equilateral triangle side = 20 cm
Perimeter of ‘square = 4s = 4x
Length of wire = 60m
ii)a square 4x
= 60 There fore x= 60/4 =15
Length of wire = 60m
The perimeter of the regular
hexagon with six “x” cm
6x =
60 x =60/6 = 10
iii)a
regular hexagon = 10
The perimeter of the regular pentagon
with five “x” cm
ix) a
regular pentagon. 5x = 60 x= 60/5 = 12cm
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