CALCULATION OF AREA, SURFACE AREA AND VOLUME

Aptitude and Reasoning Course
Volume
Area, Surface area and
24. If the volume of a sphere is divided by its surface area, the result is 27 cm. The radius of
the sphere is____cm. [C.D.S. 2005]
a)9 b)36
c)54 d)81
25. If the radius of a sphere is doubled, how many times does its volume become___times.
[S.S.C. 2005]
a)2 b)4
c)6 d)8
26. If the radius of a sphere is increased by 2 cm, then its surface area increases by 352
sq.cm. The radius of the sphere before the increase was___cm.
[R.R.B.
2003]
a)3 b)4
c)5 d)6
27. There is a square of side 6 cm . A circle is inscribed inside the square. Find the ratio of
the area of circle to square. [Honey Well
2009]
a) π/5 b) π/4
c) π/6 d) π/2
28. One rectangular plate with length 8inches,breadth 11 inches and 2 inches thickness is
there. What is the length of the circular rod with diameter 8 inches and equal to
volume of rectangular plate?
[HCL
2010]
a)3.5
b)4.5
c)5.5
d)6.5
29. If the length of the rectangle is reduced by 20% and breath is increased by 20 % what is
the net change in % [TCS 2010]
a)3 b)4
c)5 d)6
30. How many squares with sides 1/2 inch long are needed to cover a rectangle that is 4 feet
long & 6feet wide
[Infosys
2010]
a) 24 b)96
c)3456 d)13824
31. A warehouse had a square floor with area 10,000 sq.meters. A rectangular addition was
built along one entire side of the warehouse that increased the floor by one-half as much as
the original floor. How many meters did the addition extend beyond the original buildings?
SITAMS, Chittoor Page 34