Problems on Area
1. If the area of a rectangular plot increases by 30% while its breadth remains same, what will be the ratio of the areas of new and old figures?
1. 4 : 3
2. 5 : 1
3. 4 : 7
4. 11 : 13
5. None of these
Answer 5
2. A typist uses a sheet measuring 20 cm by 30 cm lengthwise. If a margin of 2 cm is left on each side and a 3 cm margin on top and bottom, then percent of the page used for typing is:
1. 40
2. 70
3. 64
4. 75
5. 36
Answer 3
3. What will be the cost of gardening 1 metre broad boundary around a rectangular plot having perimeter of 340 metres at the rate of Rs. 10 per square metre?
1. Rs. 1900 2. Rs. 3600
3. Rs. 3440
4. cannot be determined
5. None of these
Answer 3
4. 2 metres broad pathway is to be constructed around a rectangular plot on the inside. The area of the plot is 96 sq. m. The rate of construction is Rs. 50 per square metre. Find the total cost of the construction.
1. Rs. 3600
2. Rs. 5000
3. Rs. 4800
4. data inadequate
5. None of these
Answer 4
5. Within a rectangular garden 10 m wide and 20 m long, we wish to pave a walk around the borders of uniform width so as to leave an area of 96 m2 for flowers. How wide should the walk be?
1. 3.2 m
2. 2 m
3. 2.7 m
4. 3.5 m
5. 3 m
Answer 2
6. A rectangular lawn 55 m by 35 m has two roads each 4 m wide running in the middle of it, one parallel to length and the other parallel to breadth. The cost of gravelling the roads at 75 paise per sq. metre is:
1. Rs. 257.50
2. Rs. 258
3. Rs. 262.50
4. Rs. 275
5. Rs. 265
Answer 2
7. A rectangular park 60 m long and 40 m wide has two concrete crossroads running in the middle of the park and rest of the park has been used as a lawn. If the area of the lawn is 2109 sq. m, then what is the width of the road?
1. 4.50 m
2. 4 m
3. 6.50 m
4. 3 m
5. None of these
Answer 5
8. A housing society has been allotted a square piece of land measuring 2550.25 sq. m. What is the side of the plot?
1. 52.65 m
2. 50.5 m
3. 50.65 m
4. 50.15 m
5. None of these
Answer 2
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