Page 300 - ICSE Math 7

41. The cost of fencing a square field is ` 20,000 at the rate of ` 50 per metre. Find:
(a) the perimeter of the square field (b) the length of each side

(c) the area of the field

2 cm
3 cm 2 cm
42. Find the area of the shaded part of the given figure. 6 cm
4 cm

10 cm
43. Calculate the mean, median and mode of the following numbers.
12, 10, 8, 13, 16, 17, 23, 19, 14, 21, 12
44. The following table shows the production of vehicles in different years by a company.

Year 2005 2006 2007 2008 2009 2010
Number of vehicles 120 100 130 125 145 150

(in thousands)
Represent the given data by a bar graph.
45. A box contains 150 nuts and 50 bolts, half of the nuts and half of the bolts are rusted. One item
is drawn at random from the box. Find:
(a) P (nut) (b) P (bolt) (c) P (rusted bolts) (d) P (not a rusted item)

46. Rishi has 32 cards include 4 picture cards and 12 number cards. Determine the probability of
a randomly selected card to be a picture card.

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