N216
N200
N184
N144
N100
Correct answer is C
10% of 400 = N40, Remainder = N360 40% of 360 = N144 Altogether they 144 + 40 = N184
A pair of straight lines parallel to PQ
The perpendicular bisector of PQ
An arc of a circle passing through P and Q
A circle with diameter PQ
The bisector of angle PXQ
Correct answer is B
No explanation has been provided for this answer.
The ratio of the areas of similar triangles is necessarily equal to
the ratio of the corresponding sides
the ratio of the squares of corresponding sides
the ratio of the corresponding heights of the triangles
half the ratio of the corresponding heights of the triangles
the ratio of the corresponding bases to the heights of the triangles
Correct answer is B
The ratio of the areas of two similar triangles is equal to the square of ratio of their corresponding sides.
A solid cylinder of radius 3cm has a total surface area of 36\(\pi\)cm2. Find its height
2cm
3cm
4cm
5cm
6cm
Correct answer is B
Area 2\(\pi\)r2 + 2 \(\pi\)r(r + h)
= 2\(\pi\)r(r + h)
36\(\pi\) = 6\(\pi\)(r + h)
36\(\pi\) = 6\(\pi\)(3 + h)
36\(\pi\) = 18\(\pi\) + 6\(\pi\)h
36\(\pi\) - 18\(\pi\) = 6\(\pi\)h
Divide both side by 6\(\pi\)
h = 3cm
Find the roots of the equation 10x2 - 13x - 3 = 0
x = \(\frac{3}{5}\) or -\(\frac{1}{2}\)
x = \(\frac{3}{10}\) or -1
x = \(\frac{3}{10}\) or 1
x = \(\frac{1}{5}\) or \(\frac{-3}{2}\)
x = -\(\frac{1}{5}\) or \(\frac{3}{2}\)
Correct answer is E
10x2 - 13x - 3 = 0 = 10x2 - 15x + 2x - 3 = 0
5x(2x - 3) + 2x - 3 = 0
= (5x + 1)(2x - 3) = 0
5x + 1 = 0 or 2x - 3 = 0
x = -\(\frac{1}{5}\) or \(\frac{3}{2}\)