# Volume of a right circular cylinder is 450 cm3and its curved surfaces area is 200 cm2. Find its radius

1.  2.5 cm

2.  1.5 cm

3.  5cm

4.  4.5 cm

4

4.5 cm

Explanation :
No Explanation available for this question

# Iron weighs 8 times the weight of steel . Find the diameter of an iron ball whose weight is equal to that of a ball of steel 16 inches diameter

1.  6

2.  7.5

3.  9

4.  8

4

8

Explanation :
No Explanation available for this question

# A rectangle 5cm*3cm is rotated about its smaller edge as axis. Find the curved surface area and volume of solid generated

1.  85,60

2.  35,40

3.  75,30

4.  30,75

4

30,75

Explanation :
No Explanation available for this question

# A well 20m in diameter is dug 15m deep and earth is spread all around a width of 5m to form an embankment. Find the height of the embankment.

1.  69

2.  82

3.  80

4.  75

4

82

Explanation :
No Explanation available for this question

# The radius of a circular cylinder is increased 40%. Find the % increase in volume

1.  95

2.  96

3.  72

4.  48

4

72

Explanation :
No Explanation available for this question

# A river 10m deep 200m wide flows at the rate of 6km/hr. Find the metric tones of water running into the sea per minute

1.  30000

2.  10000

3.  2*105

4.  2*104

4

2*105

Explanation :
No Explanation available for this question

# If the diameter of a cylinder is 14cm. And height is 10cm, then total surface area (in cm2) is:

1.  748

2.  896

3.  558

4.  468

4

748

Explanation :
No Explanation available for this question

# The radius of a cylinder is 2m. And its length is 20m. The area of an iron sheet constructed from the cylinder is:

1.  88*22/7

2.  80*22/7

3.  36*22/7

4.  54*22/7

4

80*22/7

Explanation :
No Explanation available for this question

# The sum of the radius of the base and height of a solid cylinder is 40m. If the total surface area of the cylinder is 1760 m2 its volume is:

1.  57003

2.  5420m3

3.  50823

4.  56003

4

50823

Explanation :
No Explanation available for this question

1.  1:2

2.   2:1

3.  3:4

4.  2:3

4