Advertisements
Advertisements
प्रश्न
The perimeter of a rectangular field is 500 m and its length = 150 m. Find:
(i) its breadth,
(ii) its area.
(iii) cost of ploughing the field at the rate of ₹1.20 per square meter.
Advertisements
उत्तर
(i) Perimeter of a rectangle = 2 x (length + breadth)
⇒ 500 m = 2 x (150 m + breadth)
⇒ 250 m – 150 m = breadth
∴ breadth = 100 m
(ii) Area of rectangular field = length x breadth
= 150 m x 100 m
= 15000 m²
(iii) Cost of ploughing the field at the rate of
= ₹ 1.20 per square m²= area of the field x rate of ploughing
= 15000 m² x ₹ 1.20 per square metre
= ₹ 15000 x 1.20 = ₹ 18000
APPEARS IN
संबंधित प्रश्न
Find the length and perimeter of a rectangle, whose area = 120 cm2 and breadth = 8 cm
The diagonal of a rectangle is 34 cm. If its breadth is 16 cm; find its :
(i) length
(ii) area
Each side of a rectangle is doubled. Find the ratio between :
(i) perimeters of the original rectangle and the resulting rectangle.
(ii) areas of the original rectangle and the resulting rectangle.
Find the perimeter of a rectangle whose:
length = 10 m and breadth = 8 m
A regular pentagon of each side 12 cm has same perimeter as that of a regular hexagon. Find the length of each side of the hexagon.
How much wire will be needed to make a rectangle 7 cm long and 4 cm wide?
Length of a rectangle is three times its breadth. Perimeter of the rectangle is 40 cm. Find its length and width.
Length of a rectangular field is 250 m and width is 150 m. Anuradha runs around this field 3 times. How far did she run? How many times she should run around the field to cover a distance of 4 km?
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?
A hedge boundary needs to be planted around a rectangular lawn of size 72 m × 18 m. If 3 shrubs can be planted in a metre of hedge, how many shrubs will be planted in all?
