Area Problems

Area Problems
What is the diameter of the circle having 3 cm radius?

12 cm

6 cm

1.5 cm

8 cm

12 cm

6 cm

1.5 cm

8 cm

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Area Problems
If the area of an equilateral triangle is x and its perimeter is y, then which one of the following is correct?

None of these

y4 = 432 x2

y4 = 216 x2

y2 = 432 x2

None of these

y4 = 432 x2

y4 = 216 x2

y2 = 432 x2

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Area Problems
In a rhombus, whose area is 144 sq.cmone of its diagonal is twice as long as the other, The lengths of its diagonals are?

12 cm, 24 cm

6 ?2 cm, 12?2 cm

6 cm, 12 cm

24 cm, 48 cm

12 cm, 24 cm

6 ?2 cm, 12?2 cm

6 cm, 12 cm

24 cm, 48 cm

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Area Problems
The ratio between the length and breadth of a rectangular field is 5:4. If the breadth is 20 meters less than the length, the perimeters of the field is?

280 m

360 m

260 m

none of these

280 m

360 m

260 m

none of these

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Area Problems
A rectangular lawn 55m by 35m has two roads each 4m wide running in the middle of it. One parallel to the length and the other parallel to breadth. The cost of graveling the roads at 75 paise per sq meter is

rs.258

rs.358

rs.58

rs.158

rs.258

rs.358

rs.58

rs.158

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Area Problems
A man runs round a circular field of radius 50m at the speed of 12 km/hr. What is the time taken by the man to take twenty rounds of the field?

110/7 min

90/7 min

230/7 min

220/7 min

110/7 min

90/7 min

230/7 min

220/7 min

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