16.
The sides of a triangle are in the ratio 3 : 4 : 5. If its perimeter is 36 cm, area of the triangle is
- A.57 sq m
- C.56.5 sq m
- B.54 sq m
- D.None of these
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| The sides of the triangle are | |||||||||
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17.
A field is in the shape of a parallelogram. Its adjacent sides and one diagonal are 65 m, 119 m and 156 m, respectively. Find the cost of gravelling it at the rate of Rs. 10 per sq m.
- A.Rs. 81400
- C.Rs. 91400
- B.Rs. 71400
- D.None of these
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
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18.
The radius of the wheel of a vehicle is 70 cm. The wheel makes 10 revolutions in 5 seconds. The speed of the vehicle is
- A.29.46 km/hr
- C.36.25 km/hr
- B.31.68 km/hr
- D.32.72 km/hr
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
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| Distance traveled in 10 revolutions = 4400 cm = 44 m | ||||||||||||||||
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