31. Given the area of a triangle a 205 cm2,
if the side AB is 411cms find the length of the perpendicular dropped on AB
from opposite vertex?
a. 14
b. 8
c. 12
d. 10
32. The length and diagonal of a rectangle
are 12 cm and 13 cms respectively find its perimeter?
a. 34
b. 17
c. 68
d. 24
33. The length of a rectangualr hll is 5m
more than its breadth. The area of the hall is 750 m. The length of the hall is
A. 15
m
B. 22.5 m
C. 25
m D. 30 m
34.
What is the least number of squares tiles required to pave the floor of a room
15 m 17 cm long and 9 m 2 cm broad?
A.814 B.820
C.840 D.844
35. The area of a rectangle
is 460 square metres. If the length is 15% more
than the breadth, what is
the breadth of the rectangular field?
A. 15 metres B.
26 metres
C. 34.5 metres D.
None of these
36. What is the area of an
equilateral triangle of side 16cm ?
a) 243 cm2
b) 64 3 cm2
c) 363 cm2
d)323 cm2
37. From a group of boys
and girls 15 girls leave. There are then left 2 boys for each girl. After this,
45 boys leave. There are then 5 girls for each boy. Find the number of girls in
the beginning.
38. A wooden box of
dimensions 8 m x 7 m x 6 m is to carry rectangularboxes of dimensions 8 cm x 7
cm x 6 cm. The maximum number ofboxes that can be carried in the wooden box, is
:
A.9800000 B.1000000
C.7500000 D.1200000
39. A cricketer has a certain average for 10
innings. In the eleventh inning, he scored 108 runs, thereby increasing his
average by 6 runs. His new average is :
40. The surface area of a
cube is 600 cm². The length of its diagonal is:
A.10/√3 cm B.10√3 cm
C.10/√2 çm D.10√2 cm
