Question

4.
The length of a rectangular field is 60 m and the breadth is half of its length. Find the area of
the field.
5.
A square sheet of paper has a perimeter of 40 cm. What is the length of its side? Also find
the area of the square sheet?
1
6.
The area of rectangular plot is 2400 square meters and it's length is 15 times to it's breadth,
What is the perimeter?
7.
The length and breadth of a room are 6 m and 4 m respectively. How many square meters of
carpet is required to completely cover the floor of the room? If the carpet costs 240 a square
meter, what will be the total cost of the carpet for completely covering the floor?
8.
Two fields have the same perimeter. One is a square of side 72m and another is a rectang
of length 80 m. Which field has the greater area and by how much?
9.
The area of a square is 49 sq cm A rectangle has the same perimeter as the square. It
length of the rectangle is 9.3 cm, what is its breadth? Also find which has greater area​

Answer 1

Answer:

4. Breadth=60m÷2=30m

Area = 60m×30m= 1800m^2

Answer 2

Answer:–

4. The length of a rectangular field is 60 m and the breadth is half of its length. Find the area of

the field.

• Length of the rectangle = 60 m
• Breadth = Half of its length

$\fbox\gray{Area \:of\: rectangle\: = \:2(length\: + \:breadth)}$

_________

Breadth = Half of the length = 60 ÷ 2 = 30 m

Area = 2(60 + 30)

= 2(90)

= 180 m²

Therefore, the area of the rectangle field = 60m