AREA MATH (MCQs)

The ratio between the length and the breadth of a rectangular park is 3:2. If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 8 minutes, then the area of the park (in sq. m) is:  

• (a) 15360  
• (b) 153600  
• (c) 30720  
• (d) 307200  

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

• (a) 2%  
• (b) 2.02%  
• (c) 4%  
• (d) 4.04%  

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The ratio between the perimeter and the breadth of a rectangle is 5:1. If the area of the rectangle is 216 sq. cm, what is the length of the rectangle?  

• (a) 16 cm  
• (b) 18 cm  
• (c) 24 cm  
• (d) Data inadequate  
• (e) None of these  

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The percentage increase in the area of a rectangle, if each of its sides is increased by 20%, is:  

• (a) 40%  
• (b) 42%  
• (c) 44%  
• (d) 46%  

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A rectangular park 60 m long and 40 m wide has two concrete crossroads running in the middle of the park and the 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?  

• (a) 2.91 m  
• (b) 3 m  
• (c) 5.82 m  
• (d) None of these  

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The diagonal of the floor of a rectangular closet is 7.1/2 feet. The shorter side of the closet is 4.1/2 feet. What is the area of the closet in square feet?  

• (a) 5.1/4  
• (b) 13.1/2  
• (c) 27  
• (d) 37  

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A towel, when bleached, was found to have lost 20% of its length and 10% of its breadth. The percentage of decrease in area is:  

• (a) 10%  
• (b) 10.08%  
• (c) 20%  
• (d) 28%  

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A man walked diagonally across a square lot. Approximately, what was the percent saved by not walking along the edges?  

• (a) 20
• (b) 24  
• (c) 30  
• (d) 33  

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The diagonal of a rectangle is √41 cm and its area is 20 sq. cm. The perimeter of the rectangle must be:  

• (a) 9 cm  
• (b) 18 cm  
• (c) 20 cm  
• (d) 41 cm  

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What is the least number of square tiles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broad?  

• (a) 814  
• (b) 820  
• (c) 840  
• (d) 844  

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