Class 9 Maths: Surface Areas & Volumes - Chapter 13 Set 1

Question 1

Volume of a cube is

Accepted Answer

$a^3$

Answer

$6a^2$

Answer

$4a^2$

Answer

$\sqrt{3}a$

Question 2

A cuboid having surface areas of 3 adjacent faces as a,b and c has a volume:

Accepted Answer

$\sqrt{abc}$

Answer

$3\sqrt{abc}$

Answer

abc

Answer

$(abc)^2$

Question 3

Volume of the spherical shell is

Accepted Answer

$\frac{4}{3}π(R^3-r^3)$

Answer

$\frac{2}{3}πr^3$

Answer

$\frac{3}{4}πr^3$

Answer

None of these

Question 4

Volume of hollow cylinder

Accepted Answer

$π(R^2-r^2)h$

Answer

$πR^2h$

Answer

$πr^2h$

Answer

$πr^2(h_1-h_2)$

Question 5

The total surface area of the cone whose radius is $\frac{\pi }{2}$ and slant height $2l$ is

Accepted Answer

$πr(l+\frac{π}{4})$

Answer

$2πr(l+r)$

Answer

$πr(l+r)$

Answer

$2πrl$

Question 6

In a cylinder, the radius is doubles and height is halved, the curved surface area will be

Accepted Answer

same

Answer

halved

Answer

doubled

Answer

four time

Question 7

Length of diagonals of a cube of side an is

Accepted Answer

$\sqrt{3a}\ cm$

Answer

$\sqrt{2}a\ cm$

Answer

$\sqrt{3}a\ cm$

Answer

$1\ cm$

Question 8

Cuboid, cylinder, cone, sphere are

Accepted Answer

Solid figures

Answer

Plane figures

Answer

Both A and B

Answer

None of the above

Question 9

The volume of the cuboid is-

Accepted Answer

V = length × breadth × Height

Answer

V = length × breadth

Answer

V = $(Side)^3$

Answer

None of these

Question 10

The Surface area of the cuboid of the length l, breadth b, and height h is

Accepted Answer

$S = 2(lb+bh+hl)$

Answer

$S = (lb+bh+hl)$

Answer

$S= lbh$

Answer

None of these

CHAPTER-13 SURFACE AREAS AND VOLUMES (SET-1)

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