CALCULATION OF AREA, SURFACE AREA AND VOLUME

Aptitude and Reasoning Course
Volume
Area, Surface area and
28. A circular grassy land has a path 7m wide running round it on the outside. The radius of
the land is 35m.how many stones of dimensions 20cm x 11cm are required to prove the path?
a)7000 b)11000
c)77000 d)10000
29. The area of the circle circumscribed by a regular hexagon is 2П. What is the area of the
hexagon?
a)9√3cm²
b)6√3cm²
c)3√3cm²
d) √3cm²
30. The minute hand of a clock is 7cm long.What will the area swept by the minute hand in
15minutes be?
a)19.25 cm²
b)38.5 cm²
c)77 cm² d)none
31. A powder tin has a square base with sides of 8cm and height 14cm.another powder tin has
a circular base with a diameter of 8cm and height 14cm.find the difference in their capacities?
a)9√3cm²
c)3√3cm²
b)6√3cm²
d) None
32. A large field of 700 hectares is divided in to two parts. The difference of the areas of the
two parts in one-fifth of the average of the two areas. What is the area of the smaller part in
hectages?
a)225 b)280
c)300 d)315
33. A rectangular paper, when folded into two congruent parts had a perimeter of 34 cm for
each part folded along one set of sides and the same in 38 cm when folded along the other set
of sides. What is the area of the paper in sq. cm
a)140 b)240
c)540 d)None
34. The cost of carpeting a room 18m long with a carpet 75 cm wide at Rs. 4.50 per metre is
Rs. 810. The breadth of the room is___mts.
a)7 b)7.5
c)8 d)8.5
35. A courtyard 25 cm long and 16 mts broad is to be paved with bricks of dimensions 20 cm
by 10 cm. The total number of bricks required is
a)18000 b)20000
c)25000 d)None
36. The length of a rectangle is 20% more than its breadth. What will be the ratio of the area
of a rectangle to that of a square whose side is equal to the breadth of the rectangle.
SITAMS, Chittoor Page 18