Advertisements
Advertisements
प्रश्न
The perimeter of a square is 60 m, find:
(i) its each side its area
(ii) its new area obtained on increasing
(iii) each of its sides by 2 m.
Advertisements
उत्तर
Perimeter of a square = 60 m
(i) Perimeter of a square = 4 x side
60 m = 4 x side
`60/4` = side 4
∴side = 15 m
(ii) Area of square = (side)² = (15 m)²
= 15 m x 15 m
= 225 m²
(iii) Increased each side = 2 m
Side of square = 15 m
New length of side = (2m + 15m)
= 17m
∴ New Area of square = (17m)² = 17m x 17m = 289 m2
APPEARS IN
संबंधित प्रश्न
In each of the following cases, ABCD is a square and PQRS is a rectangle. Find, in each case, the area of the shaded portion.
(All measurements are in metre).
(i)
(ii)
Find the perimeter of a rectangle whose:
length = 3.6 m and breadth = 2.4 m
Each side of a square field is 70 cm. How much distance will a boy walk in order to make?
(i) one complete round of this field?
(ii) 8 complete rounds of this field?
An athlete takes 10 rounds of a rectangular park, 50 m long and 25 m wide. Find the total distance covered by him.
If we take 4 rounds around a field that is 160 m long and 90 m wide, what is the distance we walk in kilometers?
Find the perimeter of the following figure
Length of a rectangle is three times its breadth. Perimeter of the rectangle is 40 cm. Find its length and width.
The area of a rectangular field is 1600 sq m. If the length of the field is 80 m, find the perimeter of the field.
The lid of a rectangular box of sides 40 cm by 10 cm is sealed all round with tape. What is the length of the tape required?
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?
