41.A hollow iron pipe is 21 cm long and its external diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weighs 8 g/cm3, then the weight of the pipe is:
A. 3.6 kg B. 3.696 kg
C. 36 kg D. 36.9 kg
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42. men took a dip in a water tank 40 m long and 20 m broad on a religious day. If the average displacement of water by a man is 4 m3, then the rise in the water level in the tank will be:
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43. The surface area of a cube is 1734 sq. cm. Find its volume.
A. 4413 cm3. B. 4913 cm3.
C. 8913 cm3. D. 2113 cm3.
44.
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The slant height of a right circular cone is 10 m and its height is 8 m. Find the area of its curved surface.
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45. A metallic sheet is of rectangular shape with dimensions 48 m x 36 m. From each of its corners, a square is cut off so as to make an open box. If the length of the square is 8 m, the volume of the box (in m3) is
A. 3220 B. 4830
C. 5120 D. 6420
46.
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A cistern 6m long and 4 m wide contains water up to a depth of 1 m 25 cm. The total area of the wet surface is:
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49 m2
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50 m2
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53.5 m2
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55 m2
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47. If 1 cubic cm of cast iron weighs 21 gms, then find the eight of a cast iron pipe of length 1 metre with a bore of 3 cm and in which thickness of the metal is 1 em.
A.26.4 B.24.6
C.6.24 D.4.26
48.
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A metallic sheet is of rectangular shape with dimensions 48 m x 36 m. From each of its corners, a square is cut off so as to make an open box. If the length of the square is 8 m, the volume of the box (in m3) is:
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49.Spheres A and B have their radil 40 cm and 10 cm respectively. The ratio of the surface area of A to the surface area of B is
A. 1 : 4 B. 1 : 16
C. 4 : 1 D. 16 : 1
50.
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The curved surface area of a cylindrical pillar is 264 m2 and its volume is 924 m3. Find the ratio of its diameter to its height.
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Title :
Volume Practice Test 5
Description : 41.A hollow iron pipe is 21 cm long and its external diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weighs 8 g/cm3, then...
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