Advertisements
Advertisements
प्रश्न
A canal of width 1 m is constructed all along inside the field which is 24 m long and 15 m wide. Find (i) the area of the canal (ii) the cost of constructing the canal at the rate of ₹ 12 per sq.m.
Advertisements
उत्तर
Length of the field L = 24 m
Width (Breadth) of the field B = 15 m
(i) Area of the field = L × B sq.units
= 24 × 15 m2
= 360 m2
(ii) Width of the canal (W) = 1 m
Length of the field without canal (l) = L – 2(W)
= 24 – 2(1) m
= 24 – 2 m
= 22 m
Width of the field without canal (b) = B – 2W
= 15 – 2(1) m
= 15 – 2 m
= 13 m
Area of the field without canal = l × b sq.units
= 22 × 13 m2
= 286 m2
Area of the canal = 360 – 286 = 74 m2
Cost of constructing 1 m2 canal = ₹ 12
Cost of the constructing 74 m2 canal = ₹ 12 × 74
= ₹ 888
APPEARS IN
संबंधित प्रश्न
There is a circular lawn of radius 28 m. A path of 7 m width is laid around the lawn. What will be the area of the path?
A circular carpet whose radius is 106 cm is laid on a circular hall of radius 120 cm. Find the area of the hall uncovered by the carpet
The figure shown is the aerial view of the pathway. Find the area of the pathway
A rectangular garden has dimensions 11 m × 8 m. A path of 2 m wide has to be constructed along its sides. Find the area of the path
A picture is painted on a ceiling of a marriage hall whose length and breadth are 18 m and 7 m respectively. There is a border of 10 cm along each of its sides. Find the area of the border
A path 2 m long and 1 m broad is constructed around a rectangular ground of dimensions 120 m and 90 m respectively. Find the area of the path
A circular path has to be constructed around a circular lawn. If the outer and inner circumferences of the path are 88 cm and 44 cm respectively, find the width and area of the path
A cow is tethered with a rope of length 35 m at the centre of the rectangular field of length 76 m and breadth 60 m. Find the area of the land that the cow cannot graze?
A path 5 m wide runs along the inside of the rectangular field. The length of the rectangular field is three times the breadth of the field. If the area of the path is 500 m2 then find the length and breadth of the field
A strip of 4 cm wide is cut and removed from all the sides of the rectangular cardboard with dimensions 30 cm × 20 cm. Find the area of the removed portion and area of the remaining cardboard
