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
A path of uniform width, 2.5 m, runs around the inside of a rectangular field 30 m by 27 m. Find the area of the path.
The length and the breadth of a conference hall are in the ratio 7: 4 and its perimeter is 110 m. Find:
(i) area of the floor of the hall.
(ii) a number of tiles, each a rectangle of size 25 cm x 20 cm, required for the flooring of the hall.
(iii) the cost of the tiles at the rate of ₹ 1,400 per hundred tiles.
Find the perimeter of a rectangle whose:
length = 40 cm and breadth = 35 cm
Find the perimeter of a rectangle whose:
length = 8 m and breadth = 80 cm
Find the perimeter of an equilateral triangle of side 9.8 cm.
An equilateral triangle and d square has equal perimeter. If side of the triangle is 9.6 cm ; what is the length of the side of the square?
How much wire will be needed to make a rectangle 7 cm long and 4 cm wide?
If the length of a rectangle is 20 m and its width is 12 m, what is its perimeter?
A game requires its players to run around a square playground. Each side of the playground is 20 m long. One player took 5 rounds around the playground. How many metres did he run altogether?
Find the cost of fencing a rectangular park of length 175 m and breadth of 125 m at the rate of ₹ 12 per metre.
