Area

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101 Each side of a rhombus is 26 cm and one of it's diagonals is 48 cm long. The area of the rhombus is

A
240 cm°
B
300 cm°
C
360 cm°
D
480 cm°

102 The difference between two parallel sides of a trapezium is 8 cm. The perpendicular distance between them is 38 cm. If the area of the trapezium is 950 cm2 , find the length of the parallel sides:

A
21 cm, 30 cm
B
20 cm, 39 cm
C
21 cm, 29 cm
D
20 cm, 29 cm

103 If the diagonals of a rhombus are 4.8 cm and 1.4 cm, then what is the perimeter of the rhombus?

A
5 cm
B
10 cm
C
12 cm
D
20 cm

104 A man runs round a circular field of radius 50 m at the speed of 12 km/hr. What is the time taken by the man to take twenty rounds of the field?

A
30 minutes
B
32 minutes
C
34 minutes
D
None of these

105 The number of revolutions of a wheel of diameter 40 cm makes in travelling a distance of 176 m, is

A
140
B
150
C
160
D
166

106 The area of a field in the shape of a trapezium measures 1440 m°. The perpendicular distance between it's parallel sides is 24 m. If the ratio of the parallel sides is 5 : 3, the length of the larger parallel side is

A
45 m
B
60 m
C
75 m
D
120 m

107 The area of a rhombus is 150 cm°. The length of one of it's diagonals is 10 cm. The length of the other diagonal is

A
25 cm
B
30 cm
C
35 cm
D
40 cm

108 If the circumference and the area of a circle are numerically equal, then the diameter is equal to

A
x/2
B
2s
C
2
D
4

109 Find the surface area of a metal sheet which is in the form of a parallelogram whose base is 12 cm and height is 7.8 cm:

A
83.5
B
93.6
C
96.5
D
90.6

110 One side of a parallelogram is 8.06 cm and it's perpendicular distance from opposite side is 2.08 cm. What is the approximate area of the parallelogram?

A
12.56 cm2
B
14.56 cm2
C
16.76 cm2
D
15.76 cm2