Question

11. The length and breadth of a park are in the ratio 3 : 1 and its perimeter is 240 m. A path 2 m
wide runs inside it, along its boundary. Find the cost of paving the path at 3 per m².
12. A rectangular park 70 m long and 50 m broad has two roads, each 5 m wide running through its
middle, one parallel to its length and the other parallel to its breadth. Find the cost of
constructing the roads at 24 per m².
13. A saree is 4.5 m long and 1.2 m wide. A border of width 25 cm is printed along its sides, Find
the cost of printing the border at ₹1.5 per 100 cm².
14. A 80 m long and 60 m broad field has two roads through its centre, running parallel to its centre,running parallel to its sides,
The width of the longer and the shorter roads are 2 m and 2.5 m respectively. Find the area of the roads and the area of the remaining portion of the field.

15. A hall is 36 m long and 24 m broad. Allowing 40 m² for doors and windows, the cost of
papering the walls at ₹7.60 per square meter is ₹4256. Find the height of the hall.
16. The area of a rectangular park is 3584m² and its length is 64 meters. A man runs around the park at the rate of 8 km/h. How long will he take to go 10 times around it.
17. A room is 9.5 m long 6.5 m broad. It has one door measuring 2 m by 1.5 m and two windows
measuring 1.5 m by 1 m. The cost of painting the walls of the room at ₹7.50 per sq. metre is
₹555. Find the height of the room.
18. A school has a hall which is 22 m long and 15.5 m broad a carpet is laid inside the hall leaving all around a margin of 75 cm from the walls. Find the area of the carpet and the area of the strip left uncovered.
Please solve all the questions in the copy with formula..​

Answer 1

Answer:

The length and breadth of a park are in the ratio 2: 1 and its perimeter is 240 m. A path 2 m wide runs inside it, along its boundary. Find the cost of paving the path at ₹ 80 per m2.