Area Problems

Area Problems
Find the area of a triangle whose sides measure 13 cm, 14 cm and 15 cm.

44

84

64

22

44

84

64

22

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Area Problems
The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?

50% increase

75% decrease

25% increase

50% decrease

50% increase

75% decrease

25% increase

50% decrease

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Area Problems
The length of a rectangle is twice its breadth. If its length is decreased half of the 10 cm and the breadth is increased by half of the 10 cm cm, the area of the rectangle is increased by 5 sq cm, more than 70 sq cm. Find the length of the rectangle.

30 cm

40 cm

45 cm

21 cm

30 cm

40 cm

45 cm

21 cm

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Area Problems
The length of a rectangle is twice its breadth. If its length is decreased by 5 cm and the breadth is increased by 5 cm, the area of the rectangle is increased by 75 cm 2 . Therefore , the length of the rectangle is?

50 cm

40 cm

20 cm

30 cm

50 cm

40 cm

20 cm

30 cm

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Area Problems
An error 2% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is:

2.02%

4%

4.04%

2%

2.02%

4%

4.04%

2%

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Area Problems
A cost of cultivating a square field at a rate of ? 135 per hectare is ? 1215. The cost of putting a fence around it at the rate of 75 paise per meter wouldbe

? 1800

? 360

? 900

? 810

? 1800

? 360

? 900

? 810

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