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Find the surface area of a 10cm*4cm*3cm brick.

  • 154 cm square
  • 156 cm square
  • 160 cm square
  • 164 cm square
Similar Questions :

1. A hollow spherical metallic ball has an external diameter 6 cm and is 1/2 cm thick. The volume of metal used in the metal is:

  • \begin{aligned} 47\frac{1}{5} cm^3 \end{aligned}
  • \begin{aligned} 47\frac{3}{5} cm^3 \end{aligned}
  • \begin{aligned} 47\frac{7}{5} cm^3 \end{aligned}
  • \begin{aligned} 47\frac{9}{5} cm^3 \end{aligned}

2. A hemisphere and a cone have equal bases. If their heights are also equal, then the ratio of their curved surface will be :

  • \begin{aligned} 2:1 \end{aligned}
  • \begin{aligned} 1:\sqrt{2} \end{aligned}
  • \begin{aligned} \sqrt{2}:1 \end{aligned}
  • \begin{aligned} \sqrt{3}:1 \end{aligned}

3. There are bricks with 24 cm x 12 cm x 8 cm dimensions. Find the total number of bricks required to construct a wall 24 m long, 8 m high and 60 m thick with 10% of wall filled with mortar.

  • 35000
  • 40000
  • 45000
  • 50000

4. 66 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length if the wire in meters will be:

  • 76 m
  • 80 m
  • 84 m
  • 88 m

5. The volume of the largest right circular cone that can be cut out of a cube of edge 7 cm is:

  • \begin{aligned} 79.8 cm^3 \end{aligned}
  • \begin{aligned} 79.4 cm^3 \end{aligned}
  • \begin{aligned} 89.8 cm^3 \end{aligned}
  • \begin{aligned} 89.4 cm^3 \end{aligned}
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  • Muzamil Hassan 10 years ago

    wrong