1
NDA Mathematics 4 September 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
What is the diameter of a circle inscribed in a regular polygon of 12 sides, each of length 1 cm ?
A
1 + $\sqrt{2}$ cm
B
2 + $\sqrt{2}$ cm
C
2 + $\sqrt{3}$ cm
D
3 + $\sqrt{3}$ cm
2
NDA Mathematics 4 September 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
The centre of the circle passing through the origin and making positive intercepts 4 and 6 on the coordinate axes, lies on the line
A
2x − y + 1 = 0
B
3x − 2y − 1 = 0
C
3x − 4y + 6 = 0
D
2x + 3y − 26 = 0
3
NDA Mathematics 10 April 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
What is the equation of the circle which touches both the axes in the first quadrant and the line y - 2 = 0?
A
x2 + y2 - 2x - 2y - 1 = 0
B
x2 + y2 + 2x + 2y + 1 = 0
C
x2 + y2 - 2x - 2y + 1 = 0
D
x2 + y2 - 4x - 4y + 4 = 0
4
NDA Mathematics 18 April 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
What is the radius of the circle 4x2 + 4y2 - 20x + 12y - 15 = 0?
A
14 units
B
10.5 units
C
7 units
D
3.5 units
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