Mensuration - One Mark Question

10th Standard EM

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Maths

Time : 00:30:00 Hrs
Total Marks : 10
    10 x 1 = 10
  1. The curved surface area of a right circular cone of height 15 cm and base diameter 16 cm is

    (a)

    60\(\pi\) cm2

    (b)

    68\(\pi\) cm2

    (c)

    120\(\pi\) cm2

    (d)

    136\(\pi\) cm2

  2. If two solid hemispheres of same base radius r units are joined together along their bases, then curved surface area of this new solid is

    (a)

    4\(\pi\)r2 sq.units

    (b)

    6\(\pi\)r2 sq.units

    (c)

    3\(\pi\)r2 sq.units

    (d)

    8\(\pi\)r2 sq.units

  3. In a hollow cylinder, the sum of the external and internal radii is 14 cm and the width is 4 cm. If its height is 20 cm, the volume of the material in it is

    (a)

    5600\(\pi\) cm3

    (b)

    11200\(\pi\) cm3

    (c)

    56\(\pi\) cm3

    (d)

    3600\(\pi\) cm3

  4. If the radius of the base of a cone is tripled and the height is doubled then the volume is

    (a)

    made 6 times

    (b)

    made 18 times

    (c)

    made 12 times

    (d)

    unchanged

  5. The total surface area of a hemi-sphere is how much times the square of its radius.

    (a)

    \(\pi\)

    (b)

    4\(\pi\)

    (c)

    3\(\pi\)

    (d)

    2\(\pi\)

  6. The radio of base of a one 5 cm and to height 12cm. The slant height of the cone.

    (a)

    12cm

    (b)

    17 cm

    (c)

    7 cm

    (d)

    60 cm

  7. If S1 denotes the total surface area at a sphere of radius ૪ and S2 denotes the total surface area of a cylinder of base radius ૪and height 2r, then 

    (a)

    S1=S2

    (b)

    S1>S2

    (c)

    S1<S2

    (d)

    S1=2S2

  8. A cylinder 10 cone and have there are of a equal base and have the same height. what is the ratio of there volumes?

    (a)

    3:1:2

    (b)

    3:2:1

    (c)

    1:2:3

    (d)

    1:3:2

  9. How many balls, each of radius 1 cm, can be made from a solid sphere of lead of radius cm?

    (a)

    64

    (b)

    216

    (c)

    512

    (d)

    16

  10. The volume of a frustum if a cone of height L and ends -radio and r1 and r2 is

    (a)

    \(\frac{1}{3}\)πh1(r12+r22+r1r2)

    (b)

    \(\frac{1}{3}\)πh(r12+r22-r1r2)

    (c)

    πh(r12+r22+r1r2)

    (d)

    πh(r12+r22-r1r2)

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