61. What is the measure of the circum radius of a triangle whose sides are 9, 40 and 41?
(a) 6
(b) 4
(c) 24.5
(d) 20.5
Ans : (d)
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62. If the sum of the interior angles of a regular polygon measures up to 1440 degrees, how many sides does the polygon have?
(a) 10 sides
(b) 8 sides
(c) 12 sides
(d) 9 sides
Ans : (a)
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63. If ABC is a right angle triangle with angle A = 900 and 2s = a + b + c, where a > b > c where notations have their usual meanings, then which one of the following is Correct?
(a) (s - b) (s - c) > s (s - a)
(b) (s - a) (s - c) > s (s - b)
(c) (s - a) (s - b) < s (s - c)
(d) 4s (s - a) (s - b) (s - c) = bc
Ans : (c)
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64. What is the measure of in radius of the triangle whose sides are 24, 7 and 25?
(a) 12.5
(b) 3
(c) 6
(d) None of these
Ans : (b)
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65. What is the circum radius of a triangle whose sides are 7, 24 and 25 respectively?
(a) 18
(b) 12.5
(c) 12
(d) 14
Ans : (b)
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Quantitative Ability : Menstruation
66. A regular hexagon is inscribed in a circle of radius r cms. What is the perimeter of the regular hexagon?
(a) 3r
(b) 6r
(c) r
(d) 9r
Ans : (b)
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67. A 4 cm cube is cut into 1 cm cubes. What is the percentage increase in the surface area after such cutting?
(a) 4%
(b) 300%
(c) 75%
(d) 400%
Ans : (b)
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68. If the diagonal and the area of a rectangle are 25 m and 168 m2, what is the length of the rectangle?
(a) 17 m
(b) 31 m
(c) 12 m
(d) 24 m
Ans : (d)
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69. The surface area of the three coterminous faces of a cuboid are 6, 15, 10 sq.cm respectively. Find the volume of the cuboid.
(a) 30
(b) 20
(c) 40
(d) 35
Ans : (a)
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70. If each interior angle of a regular polygon is 150 degrees, then it is
(a) Octagon
(b) Decagon
(c) Dodecagon
(d) Tetrahedron
Ans : (c)
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