1
NDA Mathematics 14 November 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language

Direction: Consider the following for the next two (02) items that follow.

The two vertices of and equilateral triangle are (0, 0) and (2, 2).

Consider the following statements:

1. The third vertex has at least one irrational coordinate.

2. The area is irrational.

Which of the above statements is/are correct?

A
1 only
B
2 only
C
Both 1 and 2
D
Neither 1 nor 2
2
NDA Mathematics 18 April 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
The sides of a triangle are m, n and $\rm \sqrt{m^2+n^2+mn}$. What is the sum of the acute angles of the triangle?
A
45°
B
60°
C
75°
D
90°
3
NDA Mathematics 18 April 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
What is the area of the triangle ABC with sides a = 10cm  and c = 4cm angle B = 30°?
A
16 cm2
B
12 cm2
C
10 cm2
D
8 cm2
4
NDA Mathematics 18 April 2021
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
What is the interior angle of a regular octagon of side length 2 cm?
A
$\dfrac{\pi}{2}$
B
$\dfrac{3\pi}{4}$
C
$\dfrac{3\pi}{5}$
D
$\dfrac{3\pi}{8}$
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